The molecule is a carbohydrate acid anion that is the conjugate base of 3-deoxy-L-threo-hex-2-ulopyranosonic acid, obtained by deprotonation of the carboxy group. It is a conjugate base of a 3-deoxy-L-threo-hex-2-ulopyranosonic acid.
(4S,5S)-2,4,5-trihydroxyoxane-2-carboxylate