is conjugate acid of is tautomer of homocysteine L-homocysteine (2S)-2-amino-4-sulfanylbutanoic acid 0 135.035 135.18500 C4H9NO2S CAS:6027-13-0 CHEBI:13122 CHEBI:17588 CHEBI:21329 CHEBI:43117 CHEBI:6245 DrugBank:DB04422 FFFHZYDWPBMWHY-VKHMYHEASA-N HMDB:HMDB00742 Hcy Homocysteine with L configuration. InChI=1S/C4H9NO2S/c5-3(1-2-8)4(6)7/h3,8H,1-2,5H2,(H,6,7)/t3-/m0/s1 KEGG:C00155 KNApSAcK:C00001365 L-2-Amino-4-mercaptobutyric acid L-2-amino-4-mercaptobutyric acid L-Homocysteine L-homocysteine MetaCyc:HOMO-CYS N[C@@H](CCS)C(O)=O PDBeChem:HCS PMID:11686577 PMID:15131313 PMID:15365276 PMID:16702349 PMID:19383686 Reaxys:1721685 chebi_ontology serine family amino acid L-homocysteine zwitterion L-homocysteinate