The molecule is a hydroxy monocarboxylic acid anion that is the conjugate base of (S)-3,4-dihydroxy-2-oxobutanoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a hydroxy monocarboxylic acid anion and a 2-oxo monocarboxylic acid anion. It is a conjugate base of a (S)-3,4-dihydroxy-2-oxobutanoic acid. It is an enantiomer of a (R)-3,4-dihydroxy-2-oxobutanoate.
(3S)-3,4-dihydroxy-2-oxobutanoate