EXTERNALKim, Sunghwan, Jie Chen, Tiejun Cheng, et al. 2023. "PubChem 2023 update." Nucleic Acids Research 51 (D1): D1373-D1380.link
BUILTINPriem, Jason, Heather Piwowar, and Richard Orr. 2022. "OpenAlex: A Fully-Open Index of Scholarly Works, Authors, Venues, Institutions, and Concepts." arXiv preprint arXiv:2205.01833.link[dostep: 2026-04-27]CC0 (data); arXiv preprint
EXTERNALWishart, David S., et al. 2022. "HMDB 5.0: the Human Metabolome Database for 2022." Nucleic Acids Research 50 (D1): D622-D631.
EXTERNALKim, Sunghwan, Tiejun Cheng, Jianyong He, Chen Cheng, et al. 2021. "PubChem Protein, Pathway, Reaction, and Disease Specifications." Journal of Cheminformatics 13: 16.link
EXTERNALHaug, Kenneth, Keeva Cochrane, Venkata Chandrasekhar Nainala, et al. 2020. "MetaboLights: a resource evolving in response to the needs of its scientific community." Nucleic Acids Research 48 (D1): D440-D444.
EXTERNALSansone, Susanna-Assunta, et al. 2019. "FAIRsharing as a community approach to standards, repositories and policies." Nature Biotechnology 37 (4): 358-367.link
BUILTINMendoza, Manuel, and Christopher Belter. 2018. "Citation Analysis: A Practitioner's Guide." Journal of the Medical Library Association 106 (1): 47-55.link[dostep: 2026-04-27]CC-BY 4.0
EXTERNALHähnke, Volker D., Sunghwan Kim, and Evan E. Bolton. 2018. "PubChem chemical structure standardization." Journal of Cheminformatics 10: 36.link
EXTERNALWang, Yanli, Stephen H. Bryant, Tiejun Cheng, Jiyao Wang, et al. 2017. "PubChem BioAssay: 2017 update." Nucleic Acids Research 45 (D1): D955-D963.link
EXTERNALSalek, Reza M., Pablo Conesa, Kenneth Cochrane, et al. 2017. "Automated assembly of species metabolomes through data integration." Database 2017: bax038.
EXTERNALSud, Manish, et al. 2017. "Computational tools for the secondary analysis of metabolomics experiments." Computational and Structural Biotechnology Journal 14: 232-245.
EXTERNALWilkinson, Mark D., et al. 2016. "The FAIR Guiding Principles for scientific data management and stewardship." Scientific Data 3: 160018.link
EXTERNALSud, Manish, Eoin Fahy, Dawn Cotter, et al. 2016. "Metabolomics Workbench: An international repository for metabolomics data and metadata, metabolite standards, protocols, tutorials and training, and analysis tools." Nucleic Acids Research 44 (D1): D463-D470.
EXTERNALWishart, David S. 2016. "Emerging applications of metabolomics in drug discovery and precision medicine." Nature Reviews Drug Discovery 15 (7): 473-484.
BUILTINWilsdon, James, et al. 2015. The Metric Tide: Report of the Independent Review of the Role of Metrics in Research Assessment and Management. Bristol: HEFCE.link[dostep: 2026-04-27]Open (HEFCE/UKRI)
BUILTINBornmann, Lutz, and Ruediger Mutz. 2014. "Growth Rates of Modern Science: A Bibliometric Analysis Based on the Number of Publications and Cited References." Journal of the Association for Information Science and Technology 66 (11): 2215-2222.link[dostep: 2026-04-27]Subscription (Wiley)
BUILTINvan Eck, Nees Jan, and Ludo Waltman. 2014. "Visualizing Bibliometric Networks." In Measuring Scholarly Impact: Methods and Practice, edited by Y. Ding, R. Rousseau, and D. Wolfram, 285-320. Cham: Springer.link[dostep: 2026-04-27]Subscription (Springer)
EXTERNALCheng, Tiejun, et al. 2014. "Computation of Octanol-Water Partition Coefficients by Guiding an Additive Model with Knowledge." Journal of Chemical Information and Modeling 54 (3): 793-805.link
BUILTINHjorland, Birger. 2013. "Citation Analysis: A Social and Dynamic Approach to Knowledge Organization." Information Processing & Management 49 (6): 1313-1325.link[dostep: 2026-04-27]Subscription (Elsevier)
EXTERNALSalek, Reza M., Kenneth Haug, Pablo Conesa, et al. 2013. "The MetaboLights repository: curation challenges in metabolomics." Database 2013: bat029.
BUILTINLozano, George A., Vincent Lariviere, and Yves Gingras. 2012. "The Weakening Relationship Between the Impact Factor and Papers' Citations in the Digital Age." Journal of the American Society for Information Science and Technology 63 (11): 2140-2145.link[dostep: 2026-04-27]Subscription (Wiley)
EXTERNALWilliams, Antony J., Lee Harland, Paul Groth, et al. 2012. "Open PHACTS: Semantic interoperability for drug discovery." Drug Discovery Today 17 (21-22): 1188-1198.link
EXTERNALSansone, Susanna-Assunta, Philippe Rocca-Serra, Dawn Field, et al. 2012. "Toward interoperable bioscience data." Nature Genetics 44 (2): 121-126.
EXTERNALBolton, Evan E., et al. 2011. "PubChem3D: A new resource for scientists." Journal of Cheminformatics 3: 32.link
EXTERNALFahy, Eoin, Dawn Cotter, Manish Sud, and Shankar Subramaniam. 2011. "Lipid classification, structures and tools." Biochimica et Biophysica Acta 1811 (11): 637-647.
EXTERNALCottrell, John S. 2011. "Protein identification using MS/MS data." Journal of Proteomics 74 (10): 1842-1851.
BUILTINLariviere, Vincent, and Yves Gingras. 2010. "On the Relationship Between Interdisciplinarity and Scientific Impact." Journal of the American Society for Information Science and Technology 61 (1): 126-131.link[dostep: 2026-04-27]Subscription (Wiley)
BUILTINRobertson, Stephen, and Hugo Zaragoza. 2009. "The Probabilistic Relevance Framework: BM25 and Beyond." Foundations and Trends in Information Retrieval 3 (4): 333-389.link[dostep: 2026-04-27]Subscription (Now Publishers)
EXTERNALWishart, David S. 2009. "Computational strategies for metabolite identification in metabolomics." Bioanalysis 1 (9): 1579-1596.
BUILTINManning, Christopher D., Prabhakar Raghavan, and Hinrich Schuetze. 2008. Introduction to Information Retrieval. Cambridge: Cambridge University Press.link[dostep: 2026-04-27]Open (online edition)
BUILTINBornmann, Lutz, and Hans-Dieter Daniel. 2008. "What Do Citation Counts Measure? A Review of Studies on Citing Behavior." Journal of Documentation 64 (1): 45-80.link[dostep: 2026-04-27]Subscription (Emerald)
EXTERNALBolton, Evan E., Yanli Wang, Paul A. Thiessen, and Stephen H. Bryant. 2008. "PubChem: Integrated Platform of Small Molecules and Biological Activities." Annual Reports in Computational Chemistry 4: 217-241.link
EXTERNALWishart, David S., et al. 2007. "HMDB: the Human Metabolome Database." Nucleic Acids Research 35 (Database): D521-D526.
BUILTINMoed, Henk F. 2005. Citation Analysis in Research Evaluation. Dordrecht: Springer.link[dostep: 2026-04-27]Subscription (Springer)
EXTERNALSmith, Colin A., et al. 2005. "METLIN: a metabolite mass spectral database." Therapeutic Drug Monitoring 27 (6): 747-751.
BUILTINNewman, M. E. J. 2003. "The Structure and Function of Complex Networks." SIAM Review 45 (2): 167-256.link[dostep: 2026-04-27]Subscription (SIAM)
BUILTINPage, Lawrence, Sergey Brin, Rajeev Motwani, and Terry Winograd. 1999. "The PageRank Citation Ranking: Bringing Order to the Web." Stanford InfoLab Technical Report 1999-66.link[dostep: 2026-04-27]Open (Stanford InfoLab)
BUILTINWatts, Duncan J., and Steven H. Strogatz. 1998. "Collective Dynamics of 'Small-World' Networks." Nature 393 (6684): 440-442.link[dostep: 2026-04-27]Subscription (Nature)
BUILTINBelkin, Nicholas J., and W. Bruce Croft. 1992. "Information Filtering and Information Retrieval: Two Sides of the Same Coin?" Communications of the ACM 35 (12): 29-38.link[dostep: 2026-04-27]Subscription (ACM)
BUILTINEgghe, Leo, and Ronald Rousseau. 1990. Introduction to Informetrics: Quantitative Methods in Library, Documentation and Information Science. Amsterdam: Elsevier.link[dostep: 2026-04-27]Open (institutional repository)
BUILTINSalton, Gerard. 1989. Automatic Text Processing: The Transformation, Analysis, and Retrieval of Information by Computer. Reading, MA: Addison-Wesley.link[dostep: 2026-04-27]Subscription (ACM/Pearson)
BUILTINSalton, Gerard, and Christopher Buckley. 1988. "Term-Weighting Approaches in Automatic Text Retrieval." Information Processing & Management 24 (5): 513-523.link[dostep: 2026-04-27]Subscription (Elsevier)
BUILTINGarfield, Eugene. 1979. Citation Indexing: Its Theory and Application in Science, Technology, and Humanities. New York: Wiley.link[dostep: 2026-04-27]Subscription (Wiley)
BUILTINGarfield, Eugene. 1955. "Citation Indexes for Science: A New Dimension in Documentation through Association of Ideas." Science 122 (3159): 108-111.link[dostep: 2026-04-27]Subscription (AAAS)
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Data sources:
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Last updated: 2026-04-30
📊 Confidence:⚠️85% ACCEPTABLEAcceptable — z disclaimerem Dane potwierdzone w 1-2 źródłach lub z minimalną rozbieżnością. Cytuj z weryfikacją podstawowego źródła.
Widma pobierane na żądanie z 9 źródeł. Każde widmo jest zapisywane w naszej bazie — kolejne otwarcie = zero zapytania do zewnętrznego API. Pobierz JCAMP-DX / CSV / PNG przy każdym widmie bez szukania.
Dane pobierane przez MolGod_Spectra_Remote_Fetcher (JCAMP-DX parser) i zapisywane w tabeli wp_molgod_spectra_cache. Zero duplikatów pobrań, zero zapytań do NIST przy kolejnych otwarciach. Licencje przestrzegane (publikowany tylko deep-link + własna wizualizacja).
🔎 Wyszukiwanie po widmie (JCAMP-DX)
Wgraj plik JCAMP-DX (.jdx, .dx, .jcm) — system policzy podobieństwo cosinusowe do wszystkich widm w bazie i pokaże TOP 10 dopasowań.
📚 Bibliografia (Chicago)
McLafferty, Fred W., ed. 2018. Wiley Registry of Mass Spectral Data. 11th ed. Hoboken, NJ: Wiley. Referencyjna biblioteka MS (~775k widm).
Stein, Stephen E., and Donald R. Scott. 1994. "Optimization and Testing of Mass Spectral Library Search Algorithms for Compound Identification." Journal of the American Society for Mass Spectrometry 5 (9): 859–866. Algorytm cosine + dot-product NIST MS Search.
McDonald, Robert S., and Paul A. Wilks Jr. 1988. "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form." Applied Spectroscopy 42 (1): 151–162. Specyfikacja JCAMP-DX (rozszerzona do 5.01 dla NMR/MS).
McLafferty, Fred W., and František Tureček. 1993. "Interpretation of Mass Spectra." 4th ed. Mill Valley, CA: University Science Books. Cosine similarity matching i fragmentacja MS — fundament algorytmu wyszukiwania.
Sumner, Lloyd W., Alexander Amberg, Dave Barrett, Michael H. Beale, Richard Beger, Clare A. Daykin, Teresa W.-M. Fan, et al. 2007. "Proposed Minimum Reporting Standards for Chemical Analysis." Metabolomics 3 (3): 211–221. MSI Level 1-4 — standardy poziomu pewności dopasowania widmowego.
Stein, Stephen E. 1999. "An Integrated Method for Spectrum Extraction and Compound Identification from Gas Chromatography/Mass Spectrometry Data." Journal of the American Society for Mass Spectrometry 10 (8): 770–781. Algorytm AMDIS — dekonwolucja + library match (NIST).
Lindon, John C., George E. Tranter, and David W. Koppenaal, eds. 2017. "Encyclopedia of Spectroscopy and Spectrometry." 3rd ed. Amsterdam: Academic Press. Encyklopedyczne hasła dot. spectral library searching.
Pretsch, Ernő, Philippe Bühlmann, and Martin Badertscher. 2020. "Structure Determination of Organic Compounds: Tables of Spectral Data." 5th ed. Berlin: Springer. Tablice referencyjne dla weryfikacji match-ów library search.
Smith, Brian C. 2011. "Fundamentals of Fourier Transform Infrared Spectroscopy." 2nd ed. Boca Raton, FL: CRC Press. FT-IR i format JCAMP-DX dla widm transmisyjnych.
Larkin, Peter. 2017. "Infrared and Raman Spectroscopy: Principles and Spectral Interpretation." 2nd ed. Amsterdam: Elsevier. Principles of IR/Raman library matching i preprocessing peakow.
Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
g/L ↔ molarity
c (mol/L) = (g/L) / MW
±0.1% (depends on MW precision)
Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
mmol/L ↔ molarity
c (mol/L) = mmol/L × 10⁻³
Exact
Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
Celsius ↔ Kelvin
T(K) = t(°C) + 273.15
±0.01 K (ITS-90 scale)
BIPM (Bureau International des Poids et Mesures) (2019)
Celsius ↔ Fahrenheit
T(°F) = T(°C) × 9/5 + 32
±0.1 °F
Thompson A, Taylor BN (2008)
density-corrected % ↔ molarity
c (mol/L) = (%w/w × ρ × 10) / MW, ρ in g/mL
±0.1% when ρ known to 3 decimals
Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
📚 Bibliografia (8 źródeł autorytatywnych)
Thompson A, Taylor BN (2008). Guide for the Use of the International System of Units (SI). NIST Special Publication 811 · DOI: 10.6028/NIST.SP.811-2008 → Primary SI standard for US scientific usage
Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007). Quantities, Units and Symbols in Physical Chemistry — The IUPAC Green Book. RSC Publishing, 3rd ed. · DOI: 10.1039/9781847557889 · ISBN: 978-0-85404-433-7 → Canonical IUPAC guide for chemistry quantities/units
BIPM (Bureau International des Poids et Mesures) (2019). The International System of Units (SI), 9th edition. BIPM · ↗ → International SI definitions (incl. redefined kilogram 2019)
ISO/IEC (2022). Quantities and units — Part 1: General. International Organization for Standardization — ISO 80000-1:2022 · ↗ → General rules for physical quantities and units
ISO/IEC (2019). Quantities and units — Part 9: Physical chemistry and molecular physics. International Organization for Standardization — ISO 80000-9:2019 · ↗ → Concentration / molality / amount-of-substance conventions
Tiesinga E, Mohr PJ, Newell DB, Taylor BN (2021). CODATA recommended values of the fundamental physical constants: 2018. Rev. Mod. Phys. 93(2):025010 · DOI: 10.1103/RevModPhys.93.025010 → Avogadro, gas constant, molar volume (2019 SI revision)
IUPAC (2019). Compendium of Chemical Terminology — the IUPAC Gold Book (online). IUPAC · DOI: 10.1351/goldbook → Definitions of mass fraction, molality, normality, ppm, activity
Mills IM, Cvitaš T, Homann K, Kallay N, Kuchitsu K (1988). Quantities, Units and Symbols in Physical Chemistry. Blackwell Scientific Publications, 1st ed. · ISBN: 0-632-01773-5 → Historical predecessor of IUPAC Green Book
Podobne struktury molekularne
Ladowanie podobnych struktur...
Wyjasnienia naukowe
Automatycznie wygenerowane wyjasnienia na podstawie wlasciwosci molekularnych i oznaczen GHS. Zrodlo: dane PubChem + klasyfikacja CLP/GHS.
Czasteczka silnie polarna
Ta czasteczka ma LogP = -2.70, co oznacza silna preferencje do fazy wodnej. Wynika to z obecnosci grup funkcyjnych zdolnych do tworzenia wiazan wodorowych (np. -OH, -NH2, -COOH). Substancja dobrze rozpuszcza sie w wodzie i rozpuszczalnikach polarnych.
Rumble, John R., ed. 2023. CRC Handbook of Chemistry and Physics. 104th ed. Boca Raton, FL: CRC Press. [link ↗]
International Association for the Properties of Water and Steam (IAPWS). 1997. "Release on the Static Dielectric Constant of Ordinary Water Substance." IAPWS R8-97. [link ↗]
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Weinheim: Wiley-VCH. https://doi.org/10.1002/9783527632220. [link ↗]
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. https://doi.org/10.1201/9781420006834. [link ↗]
IFA. n.d. "Water." GESTIS Substance Database. Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung. Accessed April 25, 2026. [link ↗]
Rumble, John R., ed. 2023. CRC Handbook of Chemistry and Physics. 104th ed. Boca Raton, FL: CRC Press. [link ↗]
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Weinheim: Wiley-VCH. https://doi.org/10.1002/9783527632220. [link ↗]
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. Hoboken, NJ: Wiley. https://doi.org/10.1002/9780470508183. [link ↗]
Smallwood, Ian M. 1996. Handbook of Organic Solvent Properties. London: Arnold. https://doi.org/10.1016/B978-0-340-64578-9.X5000-9. [link ↗]
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Weinheim: Wiley-VCH. https://doi.org/10.1002/9783527632220. [link ↗]
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. [link ↗]
Rumble, John R., ed. 2023. CRC Handbook of Chemistry and Physics. 104th ed. Boca Raton, FL: CRC Press. [link ↗]
Smallwood, Ian M. 1996. Handbook of Organic Solvent Properties. London: Arnold. [link ↗]
National Institute of Standards and Technology. n.d. "Methane, dichloro- (CAS 75-09-2)." NIST Chemistry WebBook, SRD 69. Accessed April 25, 2026. [link ↗]
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. [link ↗]
International Agency for Research on Cancer. 1999. "Dichloromethane." IARC Monographs on the Evaluation of Carcinogenic Risks to Humans 71: 251–315. [link ↗]
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Weinheim: Wiley-VCH. [link ↗]
Armarego, Wilfred L. F., and Christina Li Lin Chai. 2009. Purification of Laboratory Chemicals. 6th ed. Oxford: Butterworth-Heinemann. https://doi.org/10.1016/B978-1-85617-567-8.50003-3. [link ↗]
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. [link ↗]
National Institute of Standards and Technology. n.d. "Furan, tetrahydro- (CAS 109-99-9)." NIST Chemistry WebBook. Accessed April 25, 2026. [link ↗]
Smallwood, Ian M. 1996. Handbook of Organic Solvent Properties. London: Arnold. [link ↗]
International Agency for Research on Cancer. 1999. "Chloroform." IARC Monographs on the Evaluation of Carcinogenic Risks to Humans 73: 131–182. [link ↗]
National Institute of Standards and Technology. n.d. "Methane, trichloro- (CAS 67-66-3)." NIST Chemistry WebBook. Accessed April 25, 2026. [link ↗]
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. [link ↗]
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Weinheim: Wiley-VCH. [link ↗]
Teoria rozpuszczalnosci (zastosowane w przewidywaniu kompatybilnosci):
Yalkowsky, Samuel H., and Shri C. Valvani. 1980. "Solubility and Partitioning I: Solubility of Nonelectrolytes in Water." Journal of Pharmaceutical Sciences 69 (8): 912–922. https://doi.org/10.1002/jps.2600690814 — General Solubility Equation (GSE): logS = 0.5 − logP − 0.01(MP−25).
Hildebrand, Joel H., and Robert L. Scott. 1950. The Solubility of Nonelectrolytes. 3rd ed. New York: Reinhold. — "Like dissolves like" (Hildebrand parameter δ).
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. Boca Raton, FL: CRC Press. https://doi.org/10.1201/9781420006834 — HSP triplet (dD, dP, dH) + wzór Ra.
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Weinheim: Wiley-VCH. https://doi.org/10.1002/9783527632220 — E_T(30) polarity scale, solwatochromia.
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. Hoboken, NJ: Wiley. https://doi.org/10.1002/9780470508183 — Eluotropic series, polarity index.
PubChem Compound Database — CAS 59-92-7 lookup ↗ — logP (XLogP3), water solubility experimental + predicted.
Kompletna bibliografia w akordeonie REFERENCJE (na dole strony) — Chicago Manual of Style 17th ed., Author-Date.
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Catecholamine concentrations in duck eggs are impacted by hen exposure to heat stress
UHPLCFrontiers in Physiology202387% ✓CC-BYResearch method (specificity, robustness)
Kolumna: C18, 3 \u03bcm
Faza: mobile phase in order to pass through the spin filters
Detekcja: ECD
Przepływ: 0.60 mL/min
Temp.: 22.0 °C
Inj.: 900 \u03bcL
Lyte J, Lyte M, Daniels K, Oluwagbenga E, Fraley G. Catecholamine concentrations in duck eggs are impacted by hen exposure to heat stress. Frontiers in Physiology. 2023;14:1122414. doi:10.3389/fphys.2023.1122414
Rapid “fight-or-flight” responses to stress are largely orchestrated by the catecholamines. Moreover, catecholamines and catecholamine precursors are widely recognized to act as interkingdom signaling molecules among host and microbiota, as well as to serve as chemotactic signals for bacterial foodborne pathogens. While albumen and yolk concentrations of glucocorticoids have received extensive attention as non-invasive indicators of hen response to stress, little is known regarding the impact of the hen’s stress response on in ovo catecholamine and catecholamine precursor concentrations. The aim of the present study was to determine norepinephrine and L-dopa concentrations in albumen and yolk of eggs laid by hens maintained under normal or heat stress conditions. Norepinephrine and L-dopa concentrations were also measured in oviductal tissue. Breeder ducks (∼35 weeks/age) were kept under normal (22°C) conditions or subjected to cyclical heat stress (35°C day/29.5°C night) for 3 weeks. Eggs (n = 12 per timepoint/group) were collected on a weekly basis. Hens were sacrificed at baseline or after 3 weeks of heat stress for oviductal tissue collection. Albumen, yolk, and oviduct concentrations of norepinephrine and L-dopa were determined using ultra high-performance liquid chromatography with electrochemical detection. Norepinephrine and L-dopa were detected in oviductal tissue as well as egg albumen and yolk. Norepinephrine concentrations were elevated (p < 0.05) in the yolk of eggs laid by the heat stress group compared to those of the control group. Norepinephrine concentrations in albumen were elevated (p < 0.05) in the heat stress group compared to control group at week 2. L-dopa concentrations were not significantly affected (p > 0.05) by heat stress in albumen, yolk, or oviductal tissue. Together, the present study provides the first evidence of the stress neurohormone, norepinephrine, in duck eggs and identifies that hen exposure to heat stress can affec...
Faza: mobile phase for L-DOPA detection in negative electrospray ionization mode (ESI−), compared…
Detekcja: UV 440 nm
Przepływ: 0.30 mL/min
Temp.: 37.0 °C
Inj.: 1 \u03bcL
Song J, Ma Y, Xie Z, Chen F. Investigation of Eumelanin Biosynthesis in Gluconacetobacter tumulisoli FBFS 97: A Novel Insight into a Bacterial Melanin Producer. Microorganisms. 2025;13:480. doi:10.3390/microorganisms13030480
Acetic acid bacteria (AAB) are a group of bacteria, most of which can produce pigments. However, the mechanism of pigment production by AAB is unclear. A strain of AAB, Gluconacetobacter tumulisoli FBFS 97, which can produce a large amount of brown pigment (BP), was isolated in our previous research. In the current study, it was found that the BP yield of the FBFS 97 strain was enhanced in the presence of tyrosine, and an intermediate of melanin, L-3,4-dihydroxyphenylalanine (L-DOPA), was identified using ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS). The structural properties of BP were analyzed by pyrolysis gas chromatography–mass spectrometry (Py-GC-MS). All these analyses suggest that BP may be eumelanin, a type of melanin. Then, the eumelanin biosynthetic pathway was investigated in the FBFS 97 strain, and three related genes with eumelanin including pheA, yfiH, and phhB in its genome were found and knocked out, respectively. The results showed that eumelanin production increased 1.3-fold in the pheA deletion mutant compared to the wild-type FBFS 97 strain, but when either yfiH or phhB was knocked out, the eumelanin production in the mutants was the same as that in the wild-type FBFS 97 strain. Finally, a possible biosynthetic pathway for eumelanin in the FBFS 97 strain is proposed.
European Committee for Standardization (CEN). 2016. EN 374-1:2016 — Protective gloves against dangerous chemicals and micro-organisms — Part 1: Terminology and performance requirements for chemical risks. CEN, Brussels. EN 374-1:2016. [link ↗] — Klasyfikacja rękawic chemoodpornych typ A/B/C; testy permeacji JKLPT
European Committee for Standardization (CEN). 2001. EN 166:2001 — Personal eye-protection — Specifications. CEN, Brussels. EN 166:2001. [link ↗] — Markings: B = średnia energia uderzenia, T = ekstremalne temp., 9 = stopione metale i ciała stałe
European Committee for Standardization (CEN). 2009. EN 14605:2005+A1:2009 — Protective clothing against liquid chemicals — Performance requirements for clothing with liquid-tight (Type 3) or spray-tight (Type 4) connections. CEN, Brussels. EN 14605:2009. [link ↗] — Type 3 (jet-tight) i Type 4 (spray-tight) ochrona przed cieczowymi chemikaliami
National Institute for Occupational Safety and Health (NIOSH). 2017. Recommendations for Chemical Protective Clothing: A Companion to the NIOSH Pocket Guide. U.S. Department of Health & Human Services / CDC. [link ↗] — Praktyczny przewodnik doboru CPC per substancja i scenariusz ekspozycji
Occupational Safety and Health Administration (OSHA). 2011. Personal Protective Equipment — General requirements. U.S. Department of Labor — 29 CFR 1910.132. 29 CFR 1910.132. [link ↗] — Pracodawca musi zapewnić PPE + szkolenie + hazard assessment udokumentowane na piśmie
🧪 Rozpuszczalność i kompatybilność z solwentami ⚠️85% ACCEPTABLEAcceptable — z disclaimerem Dane potwierdzone w 1-2 źródłach lub z minimalną rozbieżnością. Cytuj z weryfikacją podstawowego źródła.
Teoria rozpuszczalności (zastosowane w przewidywaniu kompatybilności):
Yalkowsky, Samuel H., and Shri C. Valvani. 1980. "Solubility and Partitioning I: Solubility of Nonelectrolytes in Water." Journal of Pharmaceutical Sciences 69 (8): 912–922. https://doi.org/10.1002/jps.2600690814 — General Solubility Equation (GSE): logS = 0.5 − logP − 0.01(MP−25).
Hildebrand, Joel H., and Robert L. Scott. 1950. The Solubility of Nonelectrolytes. 3rd ed. New York: Reinhold. — "Like dissolves like" (Hildebrand parameter δ).
Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. CRC Press. https://doi.org/10.1201/9781420006834 — HSP triplet (dD, dP, dH) + wzór Ra.
Stefanis, E., and C. Panayiotou. 2008. "Prediction of Hansen Solubility Parameters with a New Group-Contribution Method." Int J Thermophys 29: 568–585. https://doi.org/10.1007/s10765-008-0415-z
Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Wiley-VCH. https://doi.org/10.1002/9783527632220 — E_T(30) polarity scale, solwatochromia.
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. Wiley. https://doi.org/10.1002/9780470508183 — Eluotropic series, polarity index.
Van Krevelen, D. W., and K. Te Nijenhuis. 2009. Properties of Polymers. 4th ed. Elsevier. https://doi.org/10.1016/B978-0-08-054819-7.X0001-5 — Hoftyzer–Van Krevelen group contribution dla dD/dP/dH z SMILES.
Marcus, Yizhak. 1998. The Properties of Solvents. Wiley Series in Solution Chemistry, Vol. 4. ISBN 9780471983699 — Kompletny tabularny zestaw 250+ rozpuszczalników (ε, μ, donicity, acceptor numbers).
PubChem Compound Database — CAS 59-92-7 lookup ↗ — logP (XLogP3), water solubility experimental + predicted.
Kompletna bibliografia w akordeonie REFERENCJE (na dole strony) — Chicago Manual of Style 17th ed., Author-Date.
🧮 Kalkulator rozpuszczalności
Rozpuszczalność:—
logS:—
Metoda:—
⚠️ —
Rozpuszczalność vs Temperatura
🌐 Hansen Solubility Sphere (3D)
Im bliżej molekuły (czerwona kula), tym lepszy solwent. · Zaawansowany: etykiety + siatka + osie + pulsacja.
Twoja molekuła
Dobre (Ra < 5)
Średnie (Ra 5-10)
Słabe (Ra > 10)
📚 Źródła danych HSP + Ra
Hansen CM (2007). Hansen Solubility Parameters: A User's Handbook, 2nd ed., CRC Press. DOI: 10.1201/9781420006834 — Table 7.2 (HSP solwentów), wzór Ra.
Van Krevelen DW, Te Nijenhuis K (2009). Properties of Polymers, 4th ed., Elsevier. DOI: 10.1016/B978-0-08-054819-7.X0001-5 — Group contribution (Hoftyzer-Van Krevelen) dla dD/dP/dH z SMILES.
Stefanis E, Panayiotou C (2008). Prediction of Hansen solubility parameters with a new group-contribution method. Int J Thermophys 29:568-585. DOI: 10.1007/s10765-008-0415-z.
Metoda: Group Contribution (GC) — szybka estymacja δD/δP/δH z logP gdy brak danych eksperymentalnych. Dokładność ±2 MPa^½. Dla precyzji → HSPiP software.
Jak zapewnić zgodność: Etykieta musi zawierać: piktogramy GHS, słowo sygnałowe (Niebezpieczeństwo/Uwaga), zwroty H (zagrożenia) i P (środki ostrożności), dane producenta. Wymagane od 2010 (substancje) i 2015 (mieszaniny).
Jak zapewnić zgodność: Pracownicy laboratoryjni: szkolenie wstępne (instruktaż ogólny + stanowiskowy) + okresowe co 5 lat (lub co 3 dla pracowników na stanowiskach inżynieryjno-technicznych). Dokumentacja w aktach osobowych.
Jak zapewnić zgodność: Importerzy/producenci ≥1 tony/rok muszą zarejestrować substancję w ECHA (dossier techniczne + Chemical Safety Report jeśli ≥10 t). Sprawdź ECHA Annex VI / registered substances list.
Jak zapewnić zgodność: SDS dla substancji wprowadzanych do obrotu w Polsce MUSI być dostępna w języku polskim (Art. 31 REACH + Ustawa o substancjach chemicznych Art. 17). Tłumaczenie z EN nie wystarcza — wymagana lokalna SDS-PL.
Podstawa prawna: Ustawa z 25 lutego 2011 r. o substancjach chemicznych i ich mieszaninach (Dz.U. 2011 nr 63 poz. 322)
European Parliament and Council. 2008. Regulation (EC) No 1272/2008 on classification, labelling and packaging of substances and mixtures (CLP). Official Journal of the European Union L 353/1. CLP Regulation 1272/2008. [link ↗] — Klasyfikacja, oznakowanie i pakowanie substancji + mieszanin (GHS implementation w UE)
European Parliament and Council. 2006. Regulation (EC) No 1907/2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH). Official Journal of the European Union L 396/1. REACH Regulation 1907/2006. [link ↗] — REACH — rejestracja, ocena i autoryzacja chemikaliów; SVHC; SDS Aneks II
Ministerstwo Rodziny i Polityki Społecznej Rzeczypospolitej Polskiej. 2024. Rozporządzenie Ministra Rodziny i Polityki Społecznej z dnia 4 września 2024 r. w sprawie najwyższych dopuszczalnych stężeń i natężeń czynników szkodliwych dla zdrowia w środowisku pracy. Dziennik Ustaw RP 2024 poz. 1017. [link ↗] — NDS i NDSCh dla ~600 substancji chemicznych — aktualne polskie limity ekspozycji zawodowej
United Nations Economic Commission for Europe (UNECE). 2023. European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR), 2023 Edition. United Nations, Geneva. ADR 2023. [link ↗] — Międzynarodowa umowa drogowego transportu towarów niebezpiecznych — UN numbers, klasy, opakowania
H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral], H315 (32.2%): Causes skin irritation [Warning Skin corrosion/irritation], H319 (52.9%): Causes serious eye irritation [Warning Serious eye damage/eye irritation], H335 (30.8%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation], H361 (30.3%): Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity], H361d (13.5%): Suspected of damaging the unborn child [Warning Reproductive toxicity], H372 (14.4%): Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure], H411 (26.9%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard], H412 (15.9%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]
⚠ Rozlanie na skórę: 1) Zdejmij odzież 2) Spłucz wodą 15 min 3) Nie nakładaj maści 4) Lekarz jeśli podrażnienie 5) Tel. 112 lub Toksykologia +48 22 519 32 00
👁 Kontakt z oczami: 1) Płucz 15 min z otwartymi powiekami 2) Usuń soczewki 3) NATYCHMIAST okulista — ryzyko utraty wzroku (H318)
💧 Rozlanie na podłogę: 1) Ewakuuj 2) PPE 3) Wentyluj 4) Sorbent (piasek/wermiculit) 5) Neutralizuj 10% KI 6) Zbierz do odpadów 7) Spłucz wodą
🔥 Pożar: 1) Ewakuuj 2) H₂O₂ nie jest palny ale WZMAGA palenie (utleniacz H271) 3) Chłódź pojemniki wodą 4) Gaśnica CO₂/pianka — NIE suchy proszek
Małe ilości (<100 mL): Rozcieńcz do <3%, dodaj MnO₂ lub katalazę (2H₂O₂→2H₂O+O₂), sprawdź pH 6-8, wylej z dużą ilością wody.
Duże ilości: Pojemnik oznakowany GHS, karta KPO, firma utylizacyjna, transport ADR (UN2014, klasa 5.1).
❌ NIE WOLNO: wylewać stężonego >8% do kanalizacji, mieszać z organicznymi, pojemniki ciśnieniowe.
📚 FAQ techniczne — levodopa (5)
❓ Jak przygotować roztwór standardowy L-DOPA o stężeniu 1 mg/mL?
Aby przygotować roztwór standardowy L-DOPA o stężeniu 1 mg/mL, należy odważyć 1 mg substancji (co odpowiada około 0.005 mmol) i rozpuścić w 1 mL rozpuszczalnika (np. metanolu lub wody). Masa molowa L-DOPA wynosi 197.19 g/mol, więc 1 mg to około 0.005 mmol. Roztwór należy dokładnie wymieszać i przechowywać zgodnie z zaleceniami dotyczącymi przechowywania L-DOPA.
Pomocne?
❓ W jakich warunkach należy przechowywać L-DOPA, aby zachować jej stabilność?
L-DOPA powinna być przechowywana w temperaturze 2-8°C, w szczelnie zamkniętym pojemniku, chroniąc przed światłem (najlepiej w ciemnej butelce) i wilgocią. Wilgotność względna powietrza nie powinna przekraczać 60%. Przechowywanie w takich warunkach zapobiega degradacji substancji.
Pomocne?
❓ Jaka metoda analityczna jest najbardziej odpowiednia do analizy czystości L-DOPA i dlaczego?
Najbardziej odpowiednią metodą analityczną do analizy czystości L-DOPA jest wysokosprawna chromatografia cieczowa (HPLC). L-DOPA ma stosunkowo niską masę molową (197.19 g/mol) i prawdopodobnie umiarkowaną lipofilowość, co sprawia, że HPLC jest optymalną techniką do rozdzielania i analizy tej substancji. GC mogłaby być stosowana tylko po odpowiedniej derywatyzacji.
Pomocne?
❓ Jakie reakcje uboczne lub niezgodności chemiczne mogą wystąpić podczas pracy z L-DOPA?
L-DOPA może ulegać degradacji w obecności silnych utleniaczy (np. nadtlenku wodoru) lub zasad. Należy unikać kontaktu z kwasami redukującymi, które mogą prowadzić do niepożądanych reakcji. Zaleca się stosowanie rozpuszczalników takich jak metanol lub woda dejonizowana, unikając chlorowanych rozpuszczalników, które mogą powodować zanieczyszczenia.
Pomocne?
❓ W jakim praktycznym zastosowaniu laboratoryjnym wykorzystuje się L-DOPA i jakie są wymagania dotyczące jej czystości?
L-DOPA jest powszechnie stosowana jako substrat w syntezie dopaminy oraz w badaniach farmakologicznych. W zastosowaniach tych wymagana jest wysoka czystość substancji (≥99%), aby uniknąć interferencji w reakcjach biochemicznych. Czysta L-DOPA jest również używana do kalibracji w metodach analitycznych, takich jak HPLC.
Pomocne?
Wygenerowane przez AI na podstawie danych molekularnych
⚗️ Sprawdź kompatybilność reakcji
Zdrowie: 0/4
Palność: 0/4
Reaktywność: 0/4
Wg NFPA 704 / obliczone z H-codes
Sprawdź czy levodopa jest kompatybilny z innym odczynnikiem
Garfield, Eugene. 1955. "Citation Indexes for Science: A New Dimension in Documentation through Association of Ideas." Science 122, no. 3159: 108–111. https://doi.org/10.1126/science.122.3159.108. [link ↗] — Założycielska praca o citation analysis — fundament Science Citation Index (SCI) i Web of Science
Garfield, Eugene. 1979. "Citation Indexing: Its Theory and Application in Science, Technology, and Humanities." New York: Wiley. [link ↗] — Monografia — kompleksowa teoria indeksowania cytowań i scoring dorobku naukowego
Hirsch, J. E.. 2005. "An Index to Quantify an Individual's Scientific Research Output." Proceedings of the National Academy of Sciences 102, no. 46: 16569–16572. https://doi.org/10.1073/pnas.0507655102. [link ↗] — Wprowadzenie h-index — metryki ilościowej dorobku naukowego (citation count + production)
Moed, Henk F.. 2005. "Citation Analysis in Research Evaluation." Dordrecht: Springer. https://doi.org/10.1007/1-4020-3714-7. [link ↗] — Standardowa monografia o ewaluacji badań przez analizę cytowań — metodyka rankingu publikacji
Bornmann, Lutz, and Hans-Dieter Daniel. 2008. "What Do Citation Counts Measure? A Review of Studies on Citing Behavior." Journal of Documentation 64, no. 1: 45–80. https://doi.org/10.1108/00220410810844150. [link ↗] — Krytyczny przegląd: co naprawdę mierzą cytowania — uzasadnienie multi-criteria scoringu
Larivière, Vincent, and Yves Gingras. 2010. "On the Relationship Between Interdisciplinarity and Scientific Impact." Journal of the American Society for Information Science and Technology 61, no. 1: 126–131. https://doi.org/10.1002/asi.21226. [link ↗] — Empiryczny związek interdyscyplinarności z impactem — uzasadnienie ważenia review/meta-analiz
Hjørland, Birger. 2013. "Citation Analysis: A Social and Dynamic Approach to Knowledge Organization." Information Processing & Management 49, no. 6: 1313–1325. https://doi.org/10.1016/j.ipm.2013.07.001. [link ↗] — Społeczna i dynamiczna interpretacja analizy cytowań — kontekst organizacji wiedzy chemicznej
Bornmann, Lutz, and Rüdiger Mutz. 2014. "Growth Rates of Modern Science: A Bibliometric Analysis Based on the Number of Publications and Cited References." Journal of the Association for Information Science and Technology 66, no. 11: 2215–2222. https://doi.org/10.1002/asi.23329. [link ↗] — Analiza tempa wzrostu nauki + impact metrics — bazuje na cytowaniach jako proxy znaczenia naukowego
Wilsdon, James, et al.. 2015. "The Metric Tide: Report of the Independent Review of the Role of Metrics in Research Assessment and Management." Bristol: HEFCE. https://doi.org/10.13140/RG.2.1.4929.1363. [link ↗] — Niezależny raport o roli metryk w ewaluacji nauki — odpowiedzialne stosowanie cytowań w rankingu
📊 Automatycznie wyodrębnione tematy z abstraktów 8 publikacji dla CAS 59-92-7.
Algorytm: TF-IDF (Salton & Buckley 1988) — częstość terminu × odwrotna częstość dokumentowa.
Salton, Gerard, and Christopher Buckley. 1988. "Term-Weighting Approaches in Automatic Text Retrieval." Information Processing & Management 24, no. 5: 513–523. https://doi.org/10.1016/0306-4573(88)90021-0. [link ↗] — Klasyczna praca o TF-IDF (Salton & Buckley 1988) — fundament wszystkich systemów IR / vector space model
Salton, Gerard. 1989. "Automatic Text Processing: The Transformation, Analysis, and Retrieval of Information by Computer." Reading, MA: Addison-Wesley. [link ↗] — Podręcznik — pełne ujęcie automatycznego przetwarzania tekstu, indeksowania i ważenia terminów
Egghe, Leo, and Ronald Rousseau. 1990. "Introduction to Informetrics: Quantitative Methods in Library, Documentation and Information Science." Amsterdam: Elsevier. [link ↗] — Klasyczna monografia informetrii — formalizacja praw rozkładu terminów (Zipf, Bradford, Lotka)
Belkin, Nicholas J., and W. Bruce Croft. 1992. "Information Filtering and Information Retrieval: Two Sides of the Same Coin?." Communications of the ACM 35, no. 12: 29–38. https://doi.org/10.1145/138859.138861. [link ↗] — Filtering vs retrieval — uzasadnienie używania TF-IDF zarówno do tagowania jak i wyszukiwania
Blei, David M., Andrew Y. Ng, and Michael I. Jordan. 2003. "Latent Dirichlet Allocation." Journal of Machine Learning Research 3: 993–1022. [link ↗] — Praca założycielska LDA — probabilistyczne modelowanie tematów (topic modeling)
Manning, Christopher D., Prabhakar Raghavan, and Hinrich Schütze. 2008. "Introduction to Information Retrieval, Chapter 6: Scoring, Term Weighting, and the Vector Space Model." Cambridge: Cambridge University Press. [link ↗] — Standardowy podręcznik IR — formalizacja TF-IDF, długości dokumentu, normalizacji cosinusowej
Robertson, Stephen, and Hugo Zaragoza. 2009. "The Probabilistic Relevance Framework: BM25 and Beyond." Foundations and Trends in Information Retrieval 3, no. 4: 333–389. https://doi.org/10.1561/1500000019. [link ↗] — BM25 — probabilistyczny następca TF-IDF; alternatywne ważenie dla scoringu tagów tematycznych
📊 Graf cytowań dla CAS 59-92-7.
Każdy węzeł = praca naukowa, krawędź A→B = praca A cytuje B. Dane z OpenAlex (Priem 2022).
⚡ Pobierz dane sieci
Sieć budowana on-demand z OpenAlex API (cache 24h).
📚 Naukowe referencje (Chicago Author-Date)
Garfield, Eugene. 1972. "Citation Analysis as a Tool in Journal Evaluation." Science 178, no. 4060: 471–479. https://doi.org/10.1126/science.178.4060.471. [link ↗] — Praca założycielska analizy cytowań — fundament journal impact factor i citation networks
Watts, Duncan J., and Steven H. Strogatz. 1998. "Collective Dynamics of "Small-World" Networks." Nature 393, no. 6684: 440–442. https://doi.org/10.1038/30918. [link ↗] — Small-world networks — fundament topologii grafów cytowań (krótkie ścieżki, wysokie clustering)
Page, Lawrence, Sergey Brin, Rajeev Motwani, and Terry Winograd. 1999. "The PageRank Citation Ranking: Bringing Order to the Web." Stanford InfoLab Technical Report 1999-66. [link ↗] — PageRank jako uogólnienie analizy cytowań — eigenvector centrality dla rankingu węzłów grafu
Newman, M. E. J.. 2003. "The Structure and Function of Complex Networks." SIAM Review 45, no. 2: 167–256. https://doi.org/10.1137/S003614450342480. [link ↗] — Przegląd struktury i funkcji sieci złożonych — degree distribution, centrality, community detection
Newman, Mark E. J.. 2010. "Networks: An Introduction." Oxford: Oxford University Press. https://doi.org/10.1093/acprof:oso/9780199206650.001.0001. [link ↗] — Standardowy podręcznik network science — degree centrality, citation graphs, klasteryzacja
van Eck, Nees Jan, and Ludo Waltman. 2014. "Visualizing Bibliometric Networks." In Measuring Scholarly Impact: Methods and Practice, edited by Y. Ding, R. Rousseau, and D. Wolfram, 285–320. Cham: Springer. https://doi.org/10.1007/978-3-319-10377-8_13. [link ↗] — Wizualizacja sieci bibliometrycznych (VOSviewer) — bezpośrednio relewantne dla widgetu vis.js
Priem, Jason, Heather Piwowar, and Richard Orr. 2022. "OpenAlex: A Fully-Open Index of Scholarly Works, Authors, Venues, Institutions, and Concepts." arXiv preprint arXiv:2205.01833. https://doi.org/10.48550/arXiv.2205.01833. [link ↗] — Dokumentacja techniczna OpenAlex API — 250M+ scholarly works, CC0, źródło danych grafu cytowań
OpenAlex. 2024. "OpenAlex Documentation: Works, Authors, Venues, Institutions, Concepts." OurResearch (technical docs). [link ↗] — Dokumentacja API używanego przez fetch_openalex_paper() — endpoint /works, mailto polite pool
Crossref. 2024. "Crossref REST API Documentation." Crossref (technical docs). [link ↗] — Komplementarne API DOI/citation — alternatywne źródło danych dla referenced_works
📚 REFERENCJE (Bibliografia zbiorcza, Chicago Author-Date) 9 pozycji
Wszystkie źródła naukowe cytowane w akordeonach powyżej dla CAS 59-92-7. Format: Chicago Manual of Style 17th ed., Author-Date system.
🗄️ Bazy danych naukowych
PubChem. 2026. PubChem Compound Summary: CAS 59-92-7. Bethesda, MD: National Center for Biotechnology Information (NCBI), National Library of Medicine. https://pubchem.ncbi.nlm.nih.gov/#query=59-92-7. (Accessed 2026-04-30.)
NIST. 2026. NIST Chemistry WebBook: NIST Standard Reference Database 69. Gaithersburg, MD: National Institute of Standards and Technology. https://webbook.nist.gov/cgi/cbook.cgi?ID=59-92-7. (Accessed 2026-04-30.)
Rumble, John R., ed.. 2019. CRC Handbook of Chemistry and Physics: 100th Edition. Boca Raton, FL: CRC Press. https://hbcp.chemnetbase.com/.
Connors, Kenneth A., Gordon L. Amidon, and Valentino J. Stella. 1986. Chemical Stability of Pharmaceuticals: A Handbook for Pharmacists, 2nd ed.. New York: Wiley. https://doi.org/10.1002/0471734683.
📄 Artykuły naukowe (peer-reviewed)
Stoll, Vincent S., and John S. Blanchard. 1990. "Buffers: Principles and Practice: In Methods in Enzymology, vol. 182." San Diego: Academic Press. https://doi.org/10.1016/0076-6879(90)82008-P.
L-DOPA is one of the direct precursors of dopamine. The dopamine molecule is the most desirable substance in the human body. It improves well-being increases motivation and allows you to achieve your goals. L-Dopa supplementation increases dopamine levels in the body. Levodopa or L-Dopa is known by various names; Levodopa, Levodopa, L-3. The chemical name of this molecule is 4-dihydroxyphenylalanine. Levodopa is one of the most promising agents for treating neurodegradative diseases including Parkinson’s. In a number of scientific articles, we can learn about its high effectiveness in treating CNS disorders. A proven benefit of Levodopa supplementation is increased concentration. Indirectly, L-dopa improves motivation. Other benefits include an increase in sperm motility. The most abundant sources of L-Dopa are the Mucuna Pruriens and Velvet Bean plants. It was from these plants that the L-Dopa molecule was extracted. Most human studies have used single doses of 5,000mg of dried dried product of these plants. A dose of 5grams was given to people suffering from Parkinson’s disease. In healthy subjects, the recommended dosage should be started at 2500mg.
Dopa has two isomers:
D-DOPA
L-DOPA
The L-Dopa isomer has a much higher bioavailability. The two compounds differ in the chirality of the molecule. Dried Mucuna Pruriens, exhibits broad nueroprotective and antidegradative effects. It significantly increases the availability of dopamine in the body and restores adequate levels of serotonin.
The offered levodopa has been physicochemically tested by spectroscopy and chromatography. It contains no toxic contaminants or heavy metals. The L-DOPA sold is a synthetic product of very high purity. Due to the high purity of L-Dopa, the product should not be consumed by humans and is only used for laboratory testing.
For more detailed information, see the article on L-Dopa.
Scientific references:
Cordido F, Peino R, Peñalva A, Alvarez CV, Casanueva FF, Dieguez CImpaired growth hormone secretion in obese subjects is partially reversed by acipimox-mediated plasma free fatty acid depressionJ Clin Endocrinol Metab.(1996 Mar).
Angrist B, Gershon SClinical effects of amphetamine and L-DOPA on sexuality and aggressionCompr Psychiatry.(1976 Nov-Dec)Both S, Everaerd W, Laan E, Gooren LEffect of a single dose of levodopa on sexual response in men and womenNeuropsychopharmacology.(2005 Jan)
Bostwick JM, Hecksel KA, Stevens SR, Bower JH, Ahlskog JEFrequency of new-onset pathological compulsive gambling or hypersexuality after drug treatment of idiopathic Parkinson diseaseMayo Clin Proc.(2009 Apr)
Root AW, Russ RDEffect of L-dihydroxyphenylalanine upon serum growth hormone concentrations in children and adolescentsJ Pediatr.(1972 Oct).
Muhlack S, Woitalla D, Welnic J, Twiehaus S, Przuntek H, Müller TChronic levodopa intake increases levodopa plasma bioavailability in patients with Parkinson’s diseaseNeurosci Lett.(2004 Jun 17)
Vadivel V, Pugalenthi MStudies on the incorporation of velvet bean (Mucuna pruriens var. utilis) as an alternative protein source in poultry feed and its effect on growth performance of broiler chickensTrop Anim Health Prod.(2010 Oct)
📈 Gradient HPLC — optymalizator (LSS)SZABLON
Brak danych — szablon ogólny 5–95% MeCN/H2O w 15 min (LSS heurystyka Snyder et al. 2010, ch. 9).
Kolumna: C18
Bufor: phosphate
Przepływ: 1 mL/min
logP (estymata): 2.2
Rampa: 23% → 95% B, 15 min
Całkowity czas analizy: 28 min
t (min)
%A
%B
flow (mL/min)
Komentarz
0
77
23
1
start (równowaga)
2
77
23
1
koniec hold init
17
5
95
1
koniec rampy LSS
22
5
95
1
mycie kolumny
23
77
23
1
powrót do init
28
77
23
1
reekwilibracja
📚 Naukowe referencje (Chicago Author-Date)
Snyder, Lloyd R., John W. Dolan, and Joseph J. Kirkland. 2010. "Introduction to Modern Liquid Chromatography." 3rd ed. Wiley. ISBN 978-0-470-16754-0. — Chapter 9 — gradient elution, LSS theory (cited as Snyder et al. 2010 in tool description).
Schoenmakers, Peter J.. 1986. "Optimization of Chromatographic Selectivity: A Guide to Method Development." Elsevier. ISBN 978-0-444-42681-5. — Numerical optimization of gradient programs.
Snyder, L. R., and J. W. Dolan. 2007. "High-Performance Gradient Elution: The Practical Application of the Linear-Solvent-Strength Model." Wiley. ISBN 978-0-471-70646-5. — Foundational LSS reference for the %B_init = 5 + 8·logP heuristic implemented here.
Nikitas, Pavlos, and Adrian Pappa-Louisi. 2009. "Retention models for isocratic and gradient elution in reversed-phase liquid chromatography." — Modern review of gradient retention models — basis for non-LSS extensions.
Carr, Peter W.. 2009. "The new physical chemistry of HPLC."
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." 2nd ed. Wiley. ISBN 978-1-119-31378-3. — Modern UHPLC gradient programming, sub-2 µm scaling rules.
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations."
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." — Reference for orthogonal gradient design (2D-LC second dimension).
Dolan, John W.. 2013. "When to Modify Method Conditions."
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial."
Carr, Peter W.. 2009. "The new physical chemistry of HPLC."
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations."
Engelhardt, Heinz. 2014. "100 Years of Chromatography." 2nd ed. Wiley-VCH. ISBN 978-3-527-33473-5.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography."
REST: /wp-json/molgod/v1/hplc/gradient/59-92-7
📐 Wymiary kolumny — kalkulator van DeemterN=12,466
Wzór: H = A + B/u + C·u (Van Deemter et al. 1956), N = L/H, ΔP ≈ η·L·u / (K_p·dp²) (Knox 1977). u_opt = √(B/C) (Giddings 1965).
Wymiary
150 × 4.6 mm, 5 µm
Płyty teoretyczne (N)
12,466
N przy u_opt
12,500
HETP (obecna)
12.032 µm
HETP min
12 µm
Prędkość liniowa (u)
0.1003 cm/s
u_opt (van Deemter)
0.12 cm/s
Ciśnienie wsteczne (ΔP)
42.1 bar
Czas analizy (mart-vol)
2.49 min
📚 Naukowe referencje (Chicago Author-Date)
Van Deemter, J. J., F. J. Zuiderweg, and A. Klinkenberg. 1956. "Longitudinal diffusion and resistance to mass transfer as causes of nonideality in chromatography." Chemical Engineering Science 5: 271-289. https://doi.org/10.1016/0009-2509(56)80003-1 — Original van Deemter equation paper — basis of H = A + B/u + C·u in this calculator.
Giddings, J. Calvin. 1965. "Dynamics of Chromatography, Part I: Principles and Theory.". Marcel Dekker. — Theoretical underpinning of HETP minimum and u_opt = sqrt(B/C).
Poppe, Hans. 1997. "Some reflections on speed and efficiency of modern chromatographic methods." Journal of Chromatography A 778: 3-21. https://doi.org/10.1016/S0021-9673(97)00376-2 — Speed-efficiency Pareto plot — context for sub-2 µm UHPLC scaling.
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182. https://doi.org/10.1002/jssc.200700026 — UHPLC pressure scaling — extends Darcy ΔP formula to sub-2 µm particles.
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. https://doi.org/10.1016/j.chroma.2008.11.094 — Modern reinterpretation of A, B, C terms (eddy diffusion vs. b-term).
Knox, John H.. 1977. "Practical aspects of LC theory." Journal of Chromatographic Science 15: 352-364. https://doi.org/10.1093/chromsci/15.9.352 — Reduced plate height equation h = a·v^(1/3) + b/v + c·v.
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists.". Wiley (2nd ed.). https://doi.org/10.1002/9781119313793 — Practical N targets vs particle size table (UHPLC method scaling).
Snyder, L. R., J. J. Kirkland, and J. L. Glajch. 1997. "Practical HPLC Method Development.". Wiley (2nd ed.). — Column dimensioning rules of thumb (L, dp, dc) for given α and N.
Engelhardt, Heinz. 2014. "100 Years of Chromatography.". Wiley-VCH (2nd ed.).
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531. https://doi.org/10.1021/acs.analchem.6b03506
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. https://doi.org/10.1016/j.chroma.2008.11.094
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182. https://doi.org/10.1002/jssc.200700026
Engelhardt, Heinz. 2014. "100 Years of Chromatography.". Wiley-VCH (2nd ed.).
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531. https://doi.org/10.1021/ac101742z
REST: /wp-json/molgod/v1/hplc/column/59-92-7
🧪 Faza ruchoma — macierz kompatybilnościMISCIBLE
Składnik
Nazwa
UV cutoff (nm)
P'
Detektory
Rozp.
Acetonitrile (MeCN)
190
5.8
UV, MS, ELSD, RID, FLD
Rozp.
Water
190
10.2
UV, MS, ELSD, RID, FLD
Bufor
Phosphate (KH2PO4 / K2HPO4)
195
pH 2.0-3.0 / 6.5-8.0 / 11.0-12.5
MS ✗
Detektor: UV
— kompatybilny z oboma rozpuszczalnikami.
📚 Naukowe referencje (Chicago Author-Date)
Sadek, Paul C.. 2002. "The HPLC Solvent Guide.". Wiley-Interscience (2nd ed.).
Snyder, L. R.. 1978. "Classification of the solvent properties of common liquids." Journal of Chromatographic Science 16: 223-234. https://doi.org/10.1093/chromsci/16.6.223
Reichardt, Christian, and Thomas Welton. 2010. "Solvents and Solvent Effects in Organic Chemistry.". Wiley-VCH (4th ed.).
Vailaya, Anant, and Csaba Horváth. 1998. "Retention thermodynamics in hydrophobic interaction chromatography." Industrial & Engineering Chemistry Research 37: 4040-4055. https://doi.org/10.1021/ie980212h
Krstulović, Andrea M., and Phyllis R. Brown. 1981. "Reversed-phase High-Performance Liquid Chromatography.". Wiley.
Snyder, L. R., J. J. Kirkland, and J. L. Glajch. 1997. "Practical HPLC Method Development.". Wiley (2nd ed.).
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. https://doi.org/10.1016/j.chroma.2008.11.094
Boysen, Reinhard I., and Milton T. W. Hearn. 2009. "Multi-modal HPLC of proteins." Journal of Chromatographic Science 47: 645-654. https://doi.org/10.1093/chromsci/47.8.645
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists.". Wiley (2nd ed.). https://doi.org/10.1002/9781119313793
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531. https://doi.org/10.1021/acs.analchem.6b03506
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. https://doi.org/10.1016/j.chroma.2008.11.094
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182. https://doi.org/10.1002/jssc.200700026
Engelhardt, Heinz. 2014. "100 Years of Chromatography.". Wiley-VCH (2nd ed.).
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531. https://doi.org/10.1021/ac101742z
Skoog, Douglas A., F. James Holler, and Stanley R. Crouch. 2017. "Principles of Instrumental Analysis." 7th ed. Cengage Learning. ISBN 978-1-305-57721-3.
Pavia, Donald L., Gary M. Lampman, George S. Kriz, and James R. Vyvyan. 2014. "Introduction to Spectroscopy." 5th ed. Cengage Learning. ISBN 978-1-285-46012-3.
Perkampus, Heinz-Helmut. 1992. "UV-VIS Spectroscopy and Its Applications." Springer. ISBN 978-3-642-77479-9. https://doi.org/10.1007/978-3-642-77477-5
Sadek, Paul C.. 2002. "The HPLC Solvent Guide." 2nd ed. Wiley-Interscience. ISBN 978-0-471-41138-4.
Pretsch, Ernő, Philippe Bühlmann, and Martin Badertscher. 2009. "Structure Determination of Organic Compounds: Tables of Spectral Data." 4th ed. Springer. ISBN 978-3-540-93810-1. https://doi.org/10.1007/978-3-540-93810-1
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." 3rd ed. Wiley. ISBN 978-0-470-16754-0. https://doi.org/10.1002/9780470508183
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." 2nd ed. Wiley. ISBN 978-1-119-31378-3. https://doi.org/10.1002/9781119313793
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531 https://doi.org/10.1021/acs.analchem.6b03506
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531 https://doi.org/10.1021/ac101742z
Kazakevich, Yuri V., and Rosario LoBrutto, eds.. 2007. "HPLC for Pharmaceutical Scientists." Wiley-Interscience. ISBN 978-0-471-68162-4. https://doi.org/10.1002/9780470087954
Kim, Sunghwan, et al.. 2023. "PubChem 2023 update." Nucleic Acids Research 51: D1373-D1380 https://doi.org/10.1093/nar/gkac956
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531 https://doi.org/10.1021/acs.analchem.6b03506
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772 https://doi.org/10.1016/j.chroma.2008.11.094
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182 https://doi.org/10.1002/jssc.200700026
Engelhardt, Heinz. 2014. "100 Years of Chromatography." 2nd ed. Wiley-VCH. ISBN 978-3-527-33473-5.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531 https://doi.org/10.1021/ac101742z
europepmc
Zhang Y, Huang X, Zhou J, Liang W, Li X, Zhu C.. 2025. "Durable Metallized Liquid Crystal Polymer Fibers Enable Flexible and Tough Electrical Heaters." : 1087. https://doi.org/10.3390/polym17081087
europepmc
Lü S, Shang B, Liu G, Sun L, Wu Q, Geng Y.. 2025. "Effects of pine needle essential oil on melanin synthesis in B16F10 cells and its mechanism." : 133. https://doi.org/10.3892/br.2025.2011
europepmc
Zhang J, Liu S, Guo W, Huang Y, Li N.. 2025. "Oxyresveratrol suppressed melanogenesis, dendrite formation, and melanosome transport in melanocytes via regulation of the MC1R/cAMP/MITF pathway." : 20400. https://doi.org/10.1038/s41598-025-05248-x
europepmc
Barbee LA, Soge OO, Khosropour CM, LeClair A, Golden MR.. 2022. "Time to Clearance of Neisseria gonorrhoeae RNA at the Pharynx following Treatment." : e0039922. https://doi.org/10.1128/jcm.00399-22
europepmc
Nazar H, Shyama M, Ariga J, Almutawa S, Mahomed O.. 2025. "Assessment of Oral Health Knowledge and Practices and Its Association With Sociodemographic Factors Among Government Employes and Their Clients in Kuwait: A Cross-Sectional Study." : 8880948. https://doi.org/10.1155/ijod/8880948
europepmc
Wen Y, Zhan Y, Tang S, Liu F, Wu R, Kong P, Li Q, Tang X.. 2023. "Zhizhu decoction alleviates slow transit constipation by regulating aryl hydrocarbon receptor through gut microbiota." : 111-124. https://doi.org/10.1080/13880209.2022.2157020
europepmc
Song J, Ma Y, Xie Z, Chen F.. 2025. "Investigation of Eumelanin Biosynthesis in <i>Gluconacetobacter tumulisoli</i> FBFS 97: A Novel Insight into a Bacterial Melanin Producer." : 480. https://doi.org/10.3390/microorganisms13030480
europepmc
Nueraihemaiti M, Deng Z, Kamoldinov K, Chao N, Habasi M, Aisa HA.. 2024. "The Anti-Vitiligo Effects of Feshurin In Vitro from <i>Ferula samarcandica</i> and the Mechanism of Action." : 1252. https://doi.org/10.3390/ph17091252
europepmc
Guo C, Yang X, Wen T, Ma L, Zhang X, Zhang M, Roth S, Zhang M, Zhang T.. 2025. "Novel tyrosinase-inhibitory peptides derived from <i>L</i> <i>ocusta migratoria</i> protein hydrolysates: Preparation, identification and molecular docking analysis." : 102855. https://doi.org/10.1016/j.fochx.2025.102855
europepmc
Lyte JM, Lyte M, Daniels KM, Oluwagbenga EM, Fraley GS.. 2023. "Catecholamine concentrations in duck eggs are impacted by hen exposure to heat stress." : 1122414. https://doi.org/10.3389/fphys.2023.1122414
europepmc
Palladino P, Rainetti A, Lettieri M, Pieraccini G, Scarano S, Minunni M.. 2023. "Quantitative Colorimetric Sensing of Carbidopa in Anti-Parkinson Drugs Based on Selective Reaction with Indole-3-Carbaldehyde." : 9142. https://doi.org/10.3390/s23229142
europepmc
Sun JK, Josic K, Melia M, Glassman AR, Bailey C, Chalam KV, Chew EY, Cukras C, Grover S, Jaffe GJ, Lee R, Nielsen JS, Thompson DJS, Wiley HE, Ferris FL, DRCR Retina Network.. 2021. "Conversion of Central Subfield Thickness Measurements of Diabetic Macular Edema Across Cirrus and Spectralis Optical Coherence Tomography Instruments." : 34. https://doi.org/10.1167/tvst.10.14.34
dailymed
U.S. National Library of Medicine. 2026. "DailyMed: OLOPATADINE HYDROCHLORIDE SOLUTION [BEST CHOICE]." setid=04c7b08c-52c1-427c-8b8f-fe67444fbca4. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=04c7b08c-52c1-427c-8b8f-fe67444fbca4
dailymed
U.S. National Library of Medicine. 2026. "DailyMed: ATENOLOL TABLET [PREFERRED PHARMACEUTICALS INC.]." setid=0ad0c7dd-e4e5-4968-9372-7a9bb30073ec. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=0ad0c7dd-e4e5-4968-9372-7a9bb30073ec
dailymed
U.S. National Library of Medicine. 2026. "DailyMed: HYDRAVEX GEL [ONCORA PHARMA, LLC]." setid=1da8a263-354a-4ab1-90b4-cc2ecba7c2f6. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=1da8a263-354a-4ab1-90b4-cc2ecba7c2f6
dailymed
U.S. National Library of Medicine. 2026. "DailyMed: CEFDINIR POWDER, FOR SUSPENSION [PREFERRED PHARMACEUTICALS INC.]." setid=3714d558-cbaa-42e8-831b-ffbbc951ebf2. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=3714d558-cbaa-42e8-831b-ffbbc951ebf2
dailymed
U.S. National Library of Medicine. 2026. "DailyMed: PEACE OUT ACNE CARE KIT (SALICYLIC ACID) KIT [PEACE OUT INC.]." setid=4ffcd3f9-21a7-465d-e063-6394a90a9a5b. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=4ffcd3f9-21a7-465d-e063-6394a90a9a5b
dailymed
U.S. National Library of Medicine. 2026. "DailyMed: FREAKS OF NATURE MINERAL SUNSCREEN (ZINC OXIDE MINERAL SUNSCREEN) AEROSOL, SPRAY [EMPACK SPRAYTECH INC.]." setid=4ffdb1c6-b2c6-628f-e063-6394a90a2769. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=4ffdb1c6-b2c6-628f-e063-6394a90a2769
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U.S. National Library of Medicine. 2026. "DailyMed: GEMACHLICH ZUHAUSE ARTHRITIS RELIEF SPRAYS (ARNICA MONTANA 1X HPUS) SPRAY [GUANGDONG QUADRANT ECOLOGICAL TECHNOLOGY CO., LTD.]." setid=5007ee42-089a-2f0e-e063-6394a90a1021. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=5007ee42-089a-2f0e-e063-6394a90a1021
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World Health Organization. n.d. "International Nonproprietary Name (INN): levodopa for levodopa." Geneva: WHO. https://www.who.int/teams/health-product-and-policy-standards/inn
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U.S. National Library of Medicine. n.d. "Medical Subject Headings (MeSH): D007980 for levodopa." https://meshb.nlm.nih.gov/record/ui?ui=D007980
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Cambia. n.d. "The Lens — Scholar Search for CAS 59-92-7." https://www.lens.org/lens/search/scholar/list?q=59-92-7
lens_org
Cambia. n.d. "The Lens — Patent Search for CAS 59-92-7." https://www.lens.org/lens/search/patent/list?q=59-92-7
biorxiv
Goletz T, Smith J, Pereira-Smith O. 1994. "Molecular Genetic Approaches to the Study of Cellular Senescence." bioRxiv. https://doi.org/10.1101/sqb.1994.059.01.009
Oblicz współczynnik ogonowości USP (T) oraz asymetrię (As) z połówkowych szerokości piku. Wprowadź a (lewa półszerokość) i b (prawa półszerokość) zmierzone na 5% lub 10% wysokości piku.
📚 References (Chicago Author-Date)
USP General Chapter <621>. 2024. "Chromatography." United States Pharmacopeial Convention. [link ↗] — Defines USP Tailing Factor T = (a+b)/(2a) measured at 5% peak height.
International Council for Harmonisation (ICH). 2023. "Validation of Analytical Procedures Q2(R2)." ICH Expert Working Group. [link ↗] — Tailing factor is a system suitability parameter (Section 6).
Foley, Joe P., and John G. Dorsey. 1983. "Equations for calculation of chromatographic figures of merit for ideal and skewed peaks." Analytical Chemistry 55: 730-737 https://doi.org/10.1021/ac00255a033 [link ↗] — Original asymmetry factor As = b/a at 10% height (Foley & Dorsey 1983).
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." Wiley. https://doi.org/10.1002/9780470508183 [link ↗] — Chapter 2.4 — peak shape diagnostics and remedies.
Dolan, John W.. 2003. "Peak tailing and resolution." LCGC North America 21: 610-614 [link ↗] — How tailing factor degrades effective resolution.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531 https://doi.org/10.1021/ac101742z [link ↗] — Modern numerical deconvolution for asymmetric peaks.
Kromidas, Stavros. 2017. "HPLC Made to Measure: A Practical Handbook for Optimization." Wiley-VCH. — Practical Tf and As thresholds for routine QC.
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." Wiley. https://doi.org/10.1002/9781119313793 [link ↗]
Heyden, Yvan Vander, et al.. 2009. "Robustness of pharmaceutical liquid chromatographic methods." Journal of Chromatography B 877: 2120-2129 https://doi.org/10.1016/j.jchromb.2008.10.052 [link ↗]
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531 https://doi.org/10.1021/acs.analchem.6b03506 [link ↗]
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772 https://doi.org/10.1016/j.chroma.2008.11.094 [link ↗]
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182 https://doi.org/10.1002/jssc.200700026 [link ↗]
Engelhardt, Heinz. 2014. "100 Years of Chromatography." Wiley-VCH.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531 https://doi.org/10.1021/ac101742z [link ↗]
REST API: POST /wp-json/molgod/v1/hplc/peak-symmetry
📊 Kalkulator rozdzielczości i liczby półek (Rs, N, H)FEATURE K
Oblicz rozdzielczość Rs, liczbę półek teoretycznych N oraz HETP (H) dla pary pików HPLC. Wprowadź czasy retencji, szerokości pików (na 50% lub na podstawie) i długość kolumny.
📚 References (Chicago Author-Date)
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." 3rd ed. John Wiley & Sons. ISBN 978-0-470-16754-0. https://doi.org/10.1002/9780470508183 [link ↗] — Chapter 2 covers resolution, plate count and HETP fundamentals (Snyder et al. 2010).
USP General Chapter <621>. 2024. "Chromatography." USP-NF 2024 ed. United States Pharmacopeial Convention. [link ↗] — Defines Rs >= 1.5 acceptance criterion and N calculation methods.
Dolan, John W.. 2003. "How much resolution is enough?." LCGC North America 21: 350-353 [link ↗] — Practical guidance on Rs targets for routine method development.
Van Deemter, J. J., F. J. Zuiderweg, and A. Klinkenberg. 1956. "Longitudinal diffusion and resistance to mass transfer as causes of nonideality in chromatography." Chemical Engineering Science 5: 271-289 https://doi.org/10.1016/0009-2509(56)80003-1 [link ↗] — Origin of N = 5.54·(tr/w0.5)² half-height plate count formulation.
Giddings, J. Calvin. 1965. "Dynamics of Chromatography, Part I: Principles and Theory." Marcel Dekker. ISBN 978-0-8247-1357-7. — Resolution equation Rs = (1/4)·√N·(α-1)/α·k/(1+k) (master equation).
Foley, Joe P., and John G. Dorsey. 1983. "Equations for calculation of chromatographic figures of merit for ideal and skewed peaks." Analytical Chemistry 55: 730-737 https://doi.org/10.1021/ac00255a033 [link ↗] — Skewed-peak corrections to apparent N.
Knox, John H.. 1977. "Practical aspects of LC theory." Journal of Chromatographic Science 15: 352-364 https://doi.org/10.1093/chromsci/15.9.352 [link ↗]
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772 https://doi.org/10.1016/j.chroma.2008.11.094 [link ↗]
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." 2nd ed. Wiley. ISBN 978-1-119-31378-3. https://doi.org/10.1002/9781119313793 [link ↗]
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531 https://doi.org/10.1021/acs.analchem.6b03506 [link ↗]
Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772 https://doi.org/10.1016/j.chroma.2008.11.094 [link ↗]
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182 https://doi.org/10.1002/jssc.200700026 [link ↗]
Engelhardt, Heinz. 2014. "100 Years of Chromatography." 2nd ed. Wiley-VCH. ISBN 978-3-527-33473-5.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531 https://doi.org/10.1021/ac101742z [link ↗]
🧪 System Suitability — kalkulator live (USP <621>)FEATURE L
Wprowadź dane z 5-6 wstrzyknięć (areas, tr, tailing, plates) — kalkulator policzy %RSD, średnie i sprawdzi zgodność z USP <621>. Możesz wkleić CSV (po przecinku) lub edytować pojedyncze wartości.
📚 References (Chicago Author-Date)
USP General Chapter <621>. 2024. "Chromatography (System Suitability section)." USP-NF 2024 ed. United States Pharmacopeial Convention. [link ↗] — Defines RSD area < 2%, tailing < 2.0, N > 2000 acceptance criteria.
International Council for Harmonisation (ICH). 2023. "Validation of Analytical Procedures Q2(R2)." ICH Expert Working Group. [link ↗] — Section 5.4 — system suitability is part of method validation.
US Food and Drug Administration (FDA). 2018. "Reviewer Guidance: Validation of Chromatographic Methods." US Food and Drug Administration. [link ↗] — CDER reviewer perspective on chromatographic validation expectations.
Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." 3rd ed. Wiley. — Chapter 2 — system suitability fundamentals (RSD, Tf, N).
Heyden, Yvan Vander, et al.. 2009. "Robustness of pharmaceutical liquid chromatographic methods." — Robustness vs. system suitability — design-of-experiments framework.
Rozet, Eric, et al.. 2013. "Analysis of recent pharmaceutical regulatory documents on analytical method validation."
European Medicines Agency (EMA). 2011. "Guideline on bioanalytical method validation EMEA/CHMP/EWP/192217/2009." EMA. [link ↗] — EMA companion guideline with bioanalytical SS criteria.
Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." 2nd ed. Wiley. — UHPLC-specific suitability adjustments (n=5 vs. n=6).
Kazakevich, Yuri V., and Rosario LoBrutto, eds.. 2007. "HPLC for Pharmaceutical Scientists." Wiley-Interscience.
AOAC International. 2016. "Appendix F: Guidelines for Standard Method Performance Requirements." AOAC INTERNATIONAL. [link ↗] — Alternative SS thresholds for food/dietary samples.
Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial."
Carr, Peter W.. 2009. "The new physical chemistry of HPLC."
Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations."
Engelhardt, Heinz. 2014. "100 Years of Chromatography." 2nd ed. Wiley-VCH.
Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography."
REST API: POST /wp-json/molgod/v1/hplc/suitability
📊
Complete HPLC Method Guide
Peer-Reviewed
Molecule-specific scenarios, troubleshooting, and literature references
📈 Molecular Predictor
Przewidywane parametry dla tej molekuły (CAS 59-92-7) bazują na literature-backed models (Snyder-Dolan LSS, Neue pore-size rules).
⏱️Retention Time
-5.55 min
Range: 0.5 – -7.22
confidence: medium
Model: Snyder-Dolan LSS na kolumnie C18 150×4.6 mm, gradient 5→95% B w 15 min
👁️UV λmax
254 nm
confidence: medium
Aromatic ring detected → 254 nm optimal
🧪Concentration
0.5 mg/mL
= 2.536 mM
confidence: high
Safe linear range detektora UV (nie przekroczy 1.5 AU)
⚗️Buffer pH
2
Range: 1.5 – 2.5
confidence: medium
Acid (pKa=0) → mobile phase pH 2 utrzymuje neutralną formę (lepszy peak shape)
💉Injection Volume
20 μL
confidence: medium
Mniejsza objętość dla większych cząsteczek (unikanie peak broadening)
⚠️ Predykcje oparte na modelach chemometrycznych — wymagają walidacji z rzeczywistym pomiarem. Confidence: low/medium/high zależnie od dostępnych deskriptorów.
⚠ Real Chemist Problem
Co to „system suitability" i czy muszę to robić?
Nauczyciel powiedział „zrób SST". Nie wiesz co to. W metodzie USP jest checklist — 4 parametry. Które są krytyczne?
Dla logP=-2.7 rekomendacja zależy: jeśli logP<2 (polarny) → MeOH retencja wystarczy; logP≥2 (niepolarny) → ACN daje lepszy peak shape. Dla tej molekuły (MW=197.19, CAS 59-92-7) zaczynaj od ACN w gradiencie 5→95% B.
Dla logP=-2.7 rekomendacja zależy: jeśli logP<2 (polarny) → MeOH retencja wystarczy; logP≥2 (niepolarny) → ACN daje lepszy peak shape. Dla tej molekuły (MW=197.19, CAS 59-92-7) zaczynaj od ACN w gradiencie 5→95% B.
Rozwijasz metodę stability-indicating. Musisz wykryć impurities na poziomie 0.05%. System suitability: Rs ≥ 2.0, LOD 0.01%.
✅ Our Gradient Strategy
Initial hold 0–2 min @ 5% B — próbka adsorbuje na head
Ramp 2–15 min do 95% B — linear, curve 6 (Empower)
Final hold 15–20 min @ 95% B — elute strongly retained
Re-equilibrate 20–23 min back to 5% B + 5 col.volumes
🔧 Gradient Visualizer
Gradient Timeline
#
Time
%B start
%B end
Duration
Slope (Δ%B/min)
Step
Slope & Dwell Volume Test
—
Slope (Δ%B/min)
—
Gradient volume (mL)
—
Dwell vol estimate (mL)
—
k*·t0 (dla Rs)
💡 Rule of thumb: slope 2-5 %B/min daje best peak shape · dwell vol = puste rurki od pompy do kolumny (sprawdź blank run bez kolumny) · k*·t0 ≥ 3 dla Rs ≥ 2.0.
📚 Snyder-Dolan LSS Model
Log k = log kw − S·φ, gdzie φ = fraction B. Optymalny gradient: Δφ ≈ 0.6–0.8 per 5 t0. Dla kolumny 250×4.6mm @ 1 mL/min → t0 ≈ 2 min → gradient 10–12 min.
❓ Frequently Asked Questions
Heurystyka Snydera: start%B = (logP - 1) × 10. Dla logP=2 → start 10% B. Zawsze z 2 min isocratic hold aby pozwolić próbce zaadsorbować.
Heurystyka Snyder: Rt ≈ 2.5·logP + 1.2 min. Dla (2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoic acid (logP=-2.7) → szacunkowe Rt=-5.55 min. ±30% wariancja zależnie od dead volume i gradient slope. Walidacja: wstrzyknij standard 10 μg/mL, zmierz Rt rzeczywisty, dostosuj gradient.
Heurystyka Snyder: Rt ≈ 2.5·logP + 1.2 min. Dla (2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoic acid (logP=-2.7) → szacunkowe Rt=-5.55 min. ±30% wariancja zależnie od dead volume i gradient slope. Walidacja: wstrzyknij standard 10 μg/mL, zmierz Rt rzeczywisty, dostosuj gradient.
Day 1 — próbkę przygotowałam, wstrzyknęłam, baseline płaska. Day 2 — powtórzyłam 6× z różnymi próbkami. Nic. Wave check? Professor: "Zerknij na DAD scan". λ_max = 214 nm, a miałam ustawione 254 nm.
Lesson learned (Anna K., studentka 2. rok, PW, 2024-11-15):
ZAWSZE rób UV scan nieznanego związku PRZED metodą. 254 nm = tylko aromatics. 210 nm = uniwersalne. Czas zaoszczędzony: 2 dni pracy.
✅ DAD Settings
Parameter
Value
Why
Wavelength
210 nm (primary) + 254 nm (aromatic)
Uniwersalne dla COOH/C=O
Bandwidth
4 nm
Balans czułości vs selectivity
Response time
0.5 s
Zgodne z peak width ~5 s
Reference λ
360 nm, bw 100 nm
Kompensacja baseline drift
📚 Alternative Detectors
RID — dla związków bez UV (sugary, polimery). Czułość x1000 niższa.
ELSD — uniwersalny, ale destroys sample (niezgodny z MS).
LC-MS/MS — LOD 1 pg, strukturalna potwierdzenie via MRM.
CAD — charged aerosol, lepsze od ELSD dla lipid/polar.
⚠ Validation Reality Check
10 kolumn w 2 miesiące — zły filtr
Q1 audit: column cost +340% vs Q4. QA blame na lab. Investigation: nowy operator używał 0.45 μm filtra zamiast 0.22 μm. Microparticles przeszły przez guard i zabijały główne kolumny na 100. injection.
Lesson learned (Marta K., QC supervisor, pharma company, 2025-02-10):
Filter SOP musi być WRITTEN i sprawdzany co batch. 0.22 μm jest standardem per USP . Koszt błędu: 10 kolumn × 1800 zł = 18,000 zł + audit finding.
✅ USP <621> + ICH Q2(R1) Criteria
Parameter
Acceptance
Formula
Resolution (Rs)
≥ 2.0
2(tR2 − tR1) / (w1 + w2)
Tailing factor (Tf)
≤ 1.5
W0.05 / (2·f)
Plates (N)
≥ 5000
16·(tR / w)²
RSD (6 injections)
≤ 2.0%
σ / μ × 100%
Linearity (R²)
≥ 0.9990
80–120% spec, 5 levels
🔧 Pre-Flight SST Checklist
Wstrzyknij standard 6× pod rząd
Policz Rs, Tf, N, RSD dla każdego
ALL pass → proceed with samples
ANY fail → STOP, troubleshoot FIRST
🎉 Regulatory Compliance
Metoda zaprojektowana zgodnie z poniższymi regulacjami. Kliknij badge aby zobaczyć szczegóły compliance.
USP <621>ChromatographyCompliant
United States Pharmacopeia General Chapter — wymagania dla HPLC systemów.
Resolution (Rs) ≥ 2.0
Tailing factor (Tf) ≤ 2.0
Theoretical plates (N) ≥ 2000
Relative standard deviation (RSD) ≤ 2.0% (6 replicates)
Reference: USP-NF 2024, General Chapter <621> Chromatography
ICH Q2(R1)Method ValidationCompliant
International Council for Harmonisation — walidacja metod analitycznych.
Specificity — baseline separation of all analytes
Linearity — R² ≥ 0.9990, 5 levels (80–120% of spec)
Dla API (active pharmaceutical ingredient) typowo 98-102% label claim. Dla (2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoic acid (CAS 59-92-7) sprawdź: (1) USP monograph jeśli istnieje, (2) kompendium pharmacopoeia wewnętrzna, (3) ICH Q6A dla specyfikacji nowych substancji. Related substances ≤0.10% per ICH Q3A.
Dla API (active pharmaceutical ingredient) typowo 98-102% label claim. Dla (2S)-2-amino-3-(3,4-dihydroxyphenyl)propanoic acid (CAS 59-92-7) sprawdź: (1) USP monograph jeśli istnieje, (2) kompendium pharmacopoeia wewnętrzna, (3) ICH Q6A dla specyfikacji nowych substancji. Related substances ≤0.10% per ICH Q3A.
Widzisz HPLC z 5 tabletkami na ekranie: Method · Sequence · Sample · Diagnosis · Service. Klikasz Method — "No method loaded". Co teraz?
✅ Sample Prep Protocol
Rozpuść 10 mg próbki w 10 mL mobile phase (początkowa kompozycja)
Sonikuj 5 min → vortex 30 s
Filtruj 0.22 μm PTFE (nie PVDF — adsorbuje!)
Transfer 1 mL do HPLC vial z septum PTFE/silikon
Przechowuj 4°C max 48h
📚 Why Filter 0.22 μm?
Cząstki >0.22 μm zatykają inlet frit kolumny. Pressure rośnie +50 bar per 100 wstrzyknięć. Column lifetime spada z 2000 do 500 wstrzyknięć. Filter cost: 2 zł. Column cost: 1800 zł.
📄
Complete Method PDF
Full protocol with all parameters
📋
SOP Template
GMP-compliant SOP template
✓
Validation Protocol
ICH Q2(R1) validation template
📚
Bibliography (.bib)
All references in BibTeX format
🚨
Forensic Fix — real failure stories
Lessons learned
Prawdziwe wpadki chemików — co się stało, co pomogło, czego unikać.
48 godzin stracone na niewidoczne piki
Anna K., studentka 2. rok, PW2024-11-15Poziom 2/5
Co się stało:
Day 1 — próbkę przygotowałam, wstrzyknęłam, baseline płaska. Day 2 — powtórzyłam 6× z różnymi próbkami. Nic. Wave check? Professor: "Zerknij na DAD scan". λ_max = 214 nm, a miałam ustawione 254 nm.
💡 Lekcja:
ZAWSZE rób UV scan nieznanego związku PRZED metodą. 254 nm = tylko aromatics. 210 nm = uniwersalne. Czas zaoszczędzony: 2 dni pracy.
10 kolumn w 2 miesiące — zły filtr
Marta K., QC supervisor, pharma company2025-02-10Poziom 4/5
Co się stało:
Q1 audit: column cost +340% vs Q4. QA blame na lab. Investigation: nowy operator używał 0.45 μm filtra zamiast 0.22 μm. Microparticles przeszły przez guard i zabijały główne kolumny na 100. injection.
💡 Lekcja:
Filter SOP musi być WRITTEN i sprawdzany co batch. 0.22 μm jest standardem per USP . Koszt błędu: 10 kolumn × 1800 zł = 18,000 zł + audit finding.
🤖 Ask AI About This Method
Hi — I'm trained on all scenarios, FAQ, and literature for this method. Ask me anything.
👥 Podziel się swoim scenariuszem
Masz doświadczenie z tą metodą? Problem który rozwiązałaś? Wpadka której chcesz oszczędzić innym? Napisz — po akceptacji moderatora pojawi się tutaj jako „real case".
🧪 Quiz chemiczny (test wiedzy o tej substancji)
Bibliografia (Chicago)
Gee, James Paul. 2003. "What Video Games Have to Teach Us About Learning and Literacy." Palgrave Macmillan.
Deterding, Sebastian, Dan Dixon, Rilla Khaled, and Lennart Nacke. 2011. "From Game Design Elements to Gamefulness: Defining Gamification." Proceedings of MindTrek 2011.
Hamari, Juho, Jonna Koivisto, and Harri Sarsa. 2014. "Does Gamification Work? A Literature Review of Empirical Studies on Gamification." HICSS 2014.
Kapp, Karl M. 2012. "The Gamification of Learning and Instruction." Pfeiffer.
Werbach, Kevin, and Dan Hunter. 2012. "For the Win: How Game Thinking Can Revolutionize Your Business." Wharton Digital Press.
Mayer, Richard E. 2009. "Multimedia Learning." 2nd ed. Cambridge University Press.
Sweller, John, Paul Ayres, and Slava Kalyuga. 2011. "Cognitive Load Theory." Springer.
Bloom, Benjamin S. 1956. "Taxonomy of Educational Objectives, Handbook 1: Cognitive Domain." David McKay.
Anderson, Lorin W., et al. 2001. "A Taxonomy for Learning, Teaching, and Assessing." Longman.
Black, Paul, and Dylan Wiliam. 2009. "Developing the Theory of Formative Assessment." Educational Assessment, Evaluation and Accountability 21 (1): 5-31.
Marzano, Robert J., and John S. Kendall. 2007. "The New Taxonomy of Educational Objectives." 2nd ed. Corwin Press.
Bonk, Curtis J., and Charles R. Graham, eds. 2006. "The Handbook of Blended Learning." Pfeiffer.
Christensen, Clayton M., Michael B. Horn, and Curtis W. Johnson. 2008. "Disrupting Class: How Disruptive Innovation Will Change the Way the World Learns." McGraw-Hill.
🔄 Alternatywne produkty
⚠️ UWAGA NAUKOWA — Single-CAS Integrity Poniżej wymienione są INNE molekuły (alternatywy strukturalne / podobieństwo Tanimoto). Wszystkie wartości fizykochemiczne (MW, pKa, LD50, GHS, spectra) dotyczą TYCH alternatyw, NIE bieżącej molekuły (CAS 59-92-7). Dla danych bieżącej molekuły sprawdź akordeony "Dane chemiczne", "GHS", "Toksykologia" powyżej.
📚 Naukowe referencje (Chicago Author-Date) — kliknij aby rozwinąć
Standardy zarządzania batchami i certyfikacji laboratoryjnej — 13 niezależnych źródeł (ICH Q1/Q3/Q6/Q7/Q10 + ISO 17025 + WHO TRS + 21 CFR 211 + EMA + USP + Ph.Eur. + PIC/S + IPEC-PQG).
International Council for Harmonisation (ICH). 2000. "Q7 Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients." ICH Expert Working Group. [link ↗] — GMP for APIs — adopted by EMA, FDA, MHLW
International Organization for Standardization. 2017. "ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories." ISO. [link ↗] — Lab accreditation standard underpinning every CoA
World Health Organization. 2010. "WHO Good Manufacturing Practices for Pharmaceutical Products: Main Principles (WHO Technical Report Series No. 957, Annex 3)." WHO Press. [link ↗] — WHO TRS No. 957 — global reference for GMP
International Council for Harmonisation (ICH). 2003. "ICH Q1A(R2): Stability Testing of New Drug Substances and Products." International Council for Harmonisation. [link ↗] — Source for batch shelf-life and retest dating
International Council for Harmonisation (ICH). 2006. "ICH Q3A(R2): Impurities in New Drug Substances." ICH. [link ↗]
International Council for Harmonisation (ICH). 1999. "ICH Q6A: Specifications for New Drug Substances and Products." ICH. [link ↗] — CoA acceptance-criteria specification standard
International Council for Harmonisation (ICH). 2008. "ICH Q10: Pharmaceutical Quality System." ICH. [link ↗]
U.S. Food and Drug Administration. 2024. "21 CFR Part 211: Current Good Manufacturing Practice for Finished Pharmaceuticals." US Code of Federal Regulations. [link ↗] — US legal mandate (Subpart J — Records and Reports)
European Medicines Agency. 2014. "Guideline on Process Validation for Finished Products — Information and Data to Be Provided EMA/CHMP/CVMP/QWP/BWP/70278/2012." European Medicines Agency. [link ↗]
United States Pharmacopeial Convention. 2024. "United States Pharmacopeia and National Formulary, USP 47-NF 42." USP. [link ↗]
European Pharmacopoeia Commission. 2024. "European Pharmacopoeia 11th Edition." Council of Europe — EDQM. [link ↗]
Pharmaceutical Inspection Co-operation Scheme (PIC/S). 2021. "Guide to Good Manufacturing Practice for Medicinal Products PE 009-15." PIC/S Secretariat, Geneva. [link ↗] — Cross-recognized GMP for 54 inspectorates worldwide
International Pharmaceutical Excipients Council (IPEC) and Pharmaceutical Quality Group (PQG). 2017. "Joint IPEC-PQG Good Manufacturing Practices Guide for Pharmaceutical Excipients." IPEC-Americas. [link ↗] — Excipient-grade CoA standard for non-API ingredients
REST API: /wp-json/molgod/v1/coa/product/532
📈 Predyktor widma UV-VIS (200-400 nm)brak danych
⚠ Brak danych UV w bazie wp_molgod_uv_data — wykres pokazuje płaską linię referencyjną. Dodaj wpis przez detektor wavelength.
λmax
—
λmin
—
εmax (M⁻¹·cm⁻¹)
—
Rozpuszczalnik (zapytanie)
water
Stężenie (M)
1e-4
Długość drogi (cm)
1
FWHM krzywej
30 nm
Model: krzywa Gaussa wycentrowana na λmax ze skalowaniem Beer-Lamberta A = ε · c · l. Transmitancja T = 10^(-A) · 100%.
📚 Naukowe referencje (Chicago Author-Date)
Skoog, Douglas A., F. James Holler, and Stanley R. Crouch. 2017. "Principles of Instrumental Analysis." 7th ed. Cengage Learning.
Pavia, Donald L., Gary M. Lampman, George S. Kriz, and James R. Vyvyan. 2014. "Introduction to Spectroscopy." 5th ed. Cengage Learning.
Beer, August. 1852. "Bestimmung der Absorption des rothen Lichts in farbigen Flüssigkeiten." Annalen der Physik 162 (5): 78-88.
Lambert, Johann Heinrich. 1760. "Photometria sive de mensura et gradibus luminis, colorum et umbrae." Augsburg: Klett.
Perkampus, Heinz-Helmut. 1992. "UV-VIS Spectroscopy and Its Applications." Springer.
Silverstein, Robert M., Francis X. Webster, David J. Kiemle, and David L. Bryce. 2014. "Spectrometric Identification of Organic Compounds." 8th ed. Hoboken, NJ: Wiley.
Pretsch, Ernő, Philippe Bühlmann, and Martin Badertscher. 2020. "Structure Determination of Organic Compounds: Tables of Spectral Data." 5th ed. Berlin: Springer.
Sadek, Paul C. 2002. "The HPLC Solvent Guide." 2nd ed. New York: Wiley-Interscience. ISBN 978-0-471-41138-4.
Banwell, Colin N., and Elaine M. McCash. 1994. "Fundamentals of Molecular Spectroscopy." 4th ed. London: McGraw-Hill.
Field, Leslie D., Sev Sternhell, and John R. Kalman. 2013. "Organic Structures from Spectra." 5th ed. Chichester: Wiley.
Williams, Dudley H., and Ian Fleming. 2008. "Spectroscopic Methods in Organic Chemistry." 6th ed. London: McGraw-Hill.
Lampman, Gary M., Donald L. Pavia, George S. Kriz, and James R. Vyvyan. 2010. "Spectroscopy." 4th ed. Belmont, CA: Cengage Learning.
Kalsi, P. S. 2010. "Spectroscopy of Organic Compounds." 6th ed. New Delhi: New Age International.
Lindon, John C., George E. Tranter, and David W. Koppenaal, eds. 2017. "Encyclopedia of Spectroscopy and Spectrometry." 3rd ed. Amsterdam: Academic Press.
Reusch, William. 2013. "Virtual Textbook of Organic Chemistry: Spectroscopy." East Lansing, MI: Michigan State University.
Aktualnie nie znaleziono publicznych metadanych patentowych dla tej substancji w Crossref / OpenAlex. Dane uzupełnimy automatycznie po odświeżeniu cache (24h).
📚 References (Chicago Author-Date) — click to expand
World Intellectual Property Organization. 2024. "Patent Cooperation Treaty (PCT)." https://www.wipo.int/pct/.
U.S. Patent and Trademark Office. 2024. "USPTO Patent Public Search." https://ppubs.uspto.gov/.
European Patent Office. 2024. "Espacenet Patent Search." https://worldwide.espacenet.com/.
Allison, John R., and Mark A. Lemley. 1998. "Empirical Evidence on the Validity of Litigated Patents." AIPLA Quarterly Journal 26 (3): 185-275.
Lerner, Josh. 1994. "The Importance of Patent Scope: An Empirical Analysis." RAND Journal of Economics 25 (2): 319-333.
Wermuth, Camille G., David Aldous, Pierre Raboisson, and Didier Rognan, eds. 2015. "The Practice of Medicinal Chemistry." 4th ed. London: Academic Press.
Silverman, Richard B., and Mark W. Holladay. 2014. "The Organic Chemistry of Drug Design and Drug Action." 3rd ed. London: Academic Press.
Patani, George A., and Edmond J. LaVoie. 1996. "Bioisosterism: A Rational Approach in Drug Design." Chemical Reviews 96 (8): 3147-3176.
Meanwell, Nicholas A. 2011. "Synopsis of Some Recent Tactical Application of Bioisosteres in Drug Design." Journal of Medicinal Chemistry 54 (8): 2529-2591.
Newman, David J., and Gordon M. Cragg. 2020. "Natural Products as Sources of New Drugs over the Nearly Four Decades from 01/1981 to 09/2019." Journal of Natural Products 83 (3): 770-803.
Hopkins, Andrew L., and Colin R. Groom. 2002. "The Druggable Genome." Nature Reviews Drug Discovery 1 (9): 727-730.
Bickerton, G. Richard, Gaia V. Paolini, Jérémy Besnard, Sorel Muresan, and Andrew L. Hopkins. 2012. "Quantifying the Chemical Beauty of Drugs." Nature Chemistry 4 (2): 90-98.
Ertl, Peter, and Ansgar Schuffenhauer. 2009. "Estimation of Synthetic Accessibility Score of Drug-Like Molecules Based on Molecular Complexity and Fragment Contributions." Journal of Cheminformatics 1: 8.
Wishart, David S., Yannick D. Feunang, An C. Guo, et al. 2018. "DrugBank 5.0: A Major Update to the DrugBank Database for 2018." Nucleic Acids Research 46 (D1): D1074-D1082.
Davies, Mark, Michał Nowotka, George Papadatos, et al. 2015. "ChEMBL Web Services: Streamlining Access to Drug Discovery Data and Utilities." Nucleic Acids Research 43 (W1): W612-W620.
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