4-pyridoxic acid 183.053 183.16140 2-methyl-3-hydroxy-4-carboxy-5-hydroxymethylpyridine 3-hydroxy-5-(hydroxymethyl)-2-methylisonicotinic acid 3-hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carboxylic acid 4-Pyridoxate 4-Pyridoxic acid 4-pyridoxinecarboxylic acid 4-pyridoxinic acid 4-pyridoxylic acid A methylpyridine that is 2-methylpyridine substituted by a hydroxy group at C-3, a carboxy group at C-4, and a hydroxymethyl group at C-5. It is the catabolic product of vitamin B6 and is excreted in the urine. Beilstein:384006 C8H9NO4 CAS:82-82-6 CHEBI:17405 CHEBI:1928 CHEBI:20474 Cc1ncc(CO)c(C(O)=O)c1O HMDB:HMDB0000017 HXACOUQIXZGNBF-UHFFFAOYSA-N InChI=1S/C8H9NO4/c1-4-7(11)6(8(12)13)5(3-10)2-9-4/h2,10-11H,3H2,1H3,(H,12,13) KEGG:C00847 MetaCyc:CPD-1112 PMID:22770225 PMID:2580028 PMID:8505768 Reaxys:384006 chebi_ontology pyridoxic acid methylpyridines vitamin B6 monohydroxypyridine hydroxymethylpyridine