cysteine L-cysteine 0 121.01975 121.161 L-cysteine Cys L-Zystein metacyc.compound:CYS wikipedia.en:Cysteine L-Cystein reaxys:1721408 gmelin:49991 pubmed:22735334 ymdb:YMDB00046 CHEBI:41768 pdb-ccd:CYS E 920 XUJNEKJLAYXESH-REOHCLBHSA-N CHEBI:6207 drugbank:DB00151 pubmed:13761469 CYSTEINE CHEBI:13095 C3H7NO2S (R)-2-amino-3-mercaptopropanoic acid pubmed:11732994 An optically active form of cysteine having <small>L</small>-configuration. CHEBI:41811 E920 knapsack:C00001351 CHEBI:41781 L-cysteine L-Cysteine cas:52-90-4 CHEBI:17561 kegg.compound:C00097 (2R)-2-amino-3-sulfanylpropanoic acid N[C@@H](CS)C(=O)O chebi_ontology CHEBI:41227 CHEBI:41700 hmdb:HMDB0000574 drugcentral:769 ecmdb:ECMDB00574 C E-920 CHEBI:21261 InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1 FREE CYSTEINE kegg.drug:D00026 L-Cysteine (2R)-2-amino-3-mercaptopropanoic acid CYSTEINE L-2-Amino-3-mercaptopropionic acid