is conjugate base of 2-hydroxy-(indol-3-yl)acetate (2-hydroxy-1H-indol-3-yl)acetate (2-hydroxy-1H-indol-3-yl)acetate An indol-3-yl carboxylic acid anion resulting from the deprotonation of the carboxy group of 2-hydroxy-(indol-3-yl)acetic acid. This is a very minor tautomer; the major tautomer is the corresponding oxindole. C=1C=CC=C2NC(=C(C12)CC(=O)[O-])O CBECDMSAFNHLHY-UHFFFAOYSA-M CHEBI:136436 InChI=1S/C10H9NO3/c12-9(13)5-7-6-3-1-2-4-8(6)11-10(7)14/h1-4,11,14H,5H2,(H,12,13)/p-1 MetaCyc:CPD-15555 PMID:23881445 chebi_ontology 2-hydroxy-(indol-3-yl)acetic acid indol-3-yl carboxylic acid anion