is conjugate base of uric acid urate(1-) 167.10248 7,9-dihydro-1H-purine-2,6,8(3H)-trione, ion(1-) C5H3N4O3 CAS:3106-08-9 CHEBI:15290 CHEBI:30848 chebi_ontology uric acid monoanion uric acid, ion(1-) urate anion