has role 3-methyl-2-oxobutanoate 3-methyl-2-oxobutyrate CHEBI:11851 2-Oxo-3-methylbutanoate 2-Oxoisopentanoate KEGG:C00141 A 2-oxo monocarboxylic acid anion that is the conjugate base of 3-methyl-2-oxobutanoic acid, arising from deprotonation of the carboxy group. MetaCyc:2-KETO-ISOVALERATE alpha-keto-isovalerate 2-Oxoisovalerate 3-methyl-2-oxobutanoate 3-methyl-2-oxobutanoic acid butyrate branched-chain keto acid anion 2-oxo monocarboxylic acid anion branched-chain fatty acid anion oxo fatty acid anion Saccharomyces cerevisiae metabolite human metabolite