L-cysteine thioether quinone L-tryptophan derivative cysteine tryptophylquinone 353.068 353.35000 An L-tryptophan derivative that is L-tryptophan-6,7-dione in which a cysteine unit is attached at position 4 via its side-chain thiol group. C14H15N3O6S CHEBI:73670 CTQ InChI=1S/C14H15N3O6S/c15-6(13(20)21)1-5-3-17-11-10(5)9(2-8(18)12(11)19)24-4-7(16)14(22)23/h2-3,6-7,17H,1,4,15-16H2,(H,20,21)(H,22,23)/t6-,7-/m0/s1 MetaCyc:CPD-12470 N[C@@H](CSC1=CC(=O)C(=O)c2[nH]cc(C[C@H](N)C(O)=O)c12)C(O)=O PMID:11717396 PMID:12427036 PMID:12974623 S-{3-[(2S)-2-amino-2-carboxyethyl]-6,7-dioxo-6,7-dihydro-1H-indol-4-yl}-L-cysteine XSFUAHVXCRYKEI-BQBZGAKWSA-N chebi_ontology