The molecule is conjugate base of (R)-4-dehydropantoic acid; major species at pH 7.3. It is a hydroxy monocarboxylic acid anion and a 4-oxo monocarboxylic acid anion. It is a conjugate base of a (R)-4-dehydropantoic acid.
(2R)-2-hydroxy-3,3-dimethyl-4-oxobutanoate