The molecule is a monocarboxylic acid anion that is the conjugate base of phenguignardic acid, obtained from the derotonation of the carboxy group. Major species at pH 7.3. It is a conjugate base of a phenguignardic acid.
(2S,4Z)-2-benzyl-4-benzylidene-5-oxo-1,3-dioxolane-2-carboxylate