is conjugate acid of imidazoles urocanate urocanic acid 138.043 138.12412 3-(1H-imidazol-4-yl)-2-propenoic acid 3-(1H-imidazol-4-yl)prop-2-enoic acid 3-imidazol-4-ylacrylic acid An alpha,beta-unsaturated monocarboxylic acid that is prop-2-enoic acid substituted by a 1H-imidazol-4-yl group at position 3. It is a metabolite of hidtidine. Beilstein:8128219 C6H6N2O2 CAS:104-98-3 CHEBI:27248 ECMDB:ECMDB21396 HMDB:HMDB0000301 InChI=1S/C6H6N2O2/c9-6(10)2-1-5-3-7-4-8-5/h1-4H,(H,7,8)(H,9,10) LOIYMIARKYCTBW-UHFFFAOYSA-N MetaCyc:UROCANATE PDBeChem:URO PMID:11669511 PMID:24397532 PMID:24627570 Reaxys:8128219 Wikipedia:Urocanic_acid [H]C(=C([H])c1c[nH]cn1)C(O)=O chebi_ontology alpha,beta-unsaturated monocarboxylic acid