Cysteine (data page)

The complete data for Cysteine ( v )
	General information Chemical formula: C3H7NO2S  Molar mass: 121.16 g·mol−1 Systematic name: (2R)-2-amino-3-sulfanyl-propanoic acid Abbreviations: C, Cys Synonyms: 2-amino-3-mercaptopropanoic acid 2-amino-3-mercaptopropionic acid 2-amino-3-sulfanylpropanoic acid 3-mercaptoalanine AIDS{-}160777 CHEBI:15356 CHEMBANK2703 NSC 63864 NSC647530 NSC8746 Zystein
Database data
SMILES: SCC(N)C(=O)O InChI=1/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/f/h5H  ATC: N/A  CAS: [52-90-4] [1]  DrugBank: N/A  EINECS: 200-158-2  PubChem: 5862
Physical properties
Structure Crystal data Spectral data UV-Vis IR NMR MS Phase behavior Solid properties Tm: 240 °C Liquid properties Gas properties
Hazard properties
MSDS N/A Main hazards: - N/A NFPA 704 Flash point - N/A RTECS number: N/A
Chemical properties
XLogP: -2.988 pI: 5.07 pKa: 1.91; 8.14; 10.28 Tautomers: Hydrogen bond: donor - 2;  acceptor - 3
Pharmacological properties

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• Except where noted otherwise, data relate to Standard temperature and pressure.
• Reliability of data general note.