SMILES: C1=CC(=C(C=C1CC(=O)C(=O)O)O)O
Description: The molecule is a 2-oxo monocarboxylic acid that is pyruvic acid in which one of the methyl hydrogens is substituted by a 3,4-dihydroxyphenyl group. It has a role as a metabolite. It derives from a pyruvic acid. It is a conjugate acid of a 3,4-dihydroxyphenylpyruvate.