The molecule is a 2-oxo monocarboxylic acid anion that is the conjugate base of 3-(4-hydroxycyclohex-2-en-1-ylidene)pyruvic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It derives from a pyruvate. It is a conjugate base of a 3-(4-hydroxycyclohex-2-en-1-ylidene)pyruvic acid.
(3E)-3-(4-hydroxycyclohex-2-en-1-ylidene)-2-oxopropanoate