is tautomer of D-tryptophan D-tryptophan zwitterion (2R)-2-ammonio-3-(1H-indol-3-yl)propanoate (2R)-2-azaniumyl-3-(1H-indol-3-yl)propanoate 0 204.090 204.22520 C11H12N2O2 CHEBI:57719 D-tryptophan InChI=1S/C11H12N2O2/c12-9(11(14)15)5-7-6-13-10-4-2-1-3-8(7)10/h1-4,6,9,13H,5,12H2,(H,14,15)/t9-/m1/s1 MetaCyc:D-TRYPTOPHAN QIVBCDIJIAJPQS-SECBINFHSA-N Zwitterionic form of D-tryptophan having an anionic carboxy group and a protonated alpha-amino group; major species at pH 7.3. [NH3+][C@H](Cc1c[nH]c2ccccc12)C([O-])=O chebi_ontology tryptophan tryptophan zwitterion