diamine L-tyrosine derivative catechols aryl sulfide amino dicarboxylic acid S-organyl-L-cysteine S-conjugate 2-S-cysteinyl-DOPA 2-S-Cysteinyldopa 2-S-cysteinyl-3,4-dihydroxyphenylalanine 2-S-cysteinyldopa 2-{[(2R)-2-amino-2-carboxyethyl]sulfanyl}-3-hydroxy-L-tyrosine 316.073 316.33000 An L-tyrosine derivative that is L-DOPA in which the hydrogen at position 2 on the phenyl ring is replaced by a cysteinyl group. Found in the urine of patients with melanoma. C12H16N2O6S CAS:25565-17-7 CHEBI:84296 IAGPESOLVJAEAG-BQBZGAKWSA-N InChI=1S/C12H16N2O6S/c13-6(11(17)18)3-5-1-2-8(15)9(16)10(5)21-4-7(14)12(19)20/h1-2,6-7,15-16H,3-4,13-14H2,(H,17,18)(H,19,20)/t6-,7-/m0/s1 N[C@@H](CSc1c(C[C@H](N)C(O)=O)ccc(O)c1O)C(O)=O PMID:2438872 PMID:403909 PMID:408183 PMID:6409012 PMID:6784771 PMID:891724 Reaxys:2179160 chebi_ontology