The molecule is dianion of 4-(4-deoxy-beta-D-gluc-4-enosyluronic acid)-D-galacturonic acid arising from deprotonation of both carboxy groups. It is a carbohydrate acid anion and a dicarboxylic acid dianion. It is a conjugate base of a 4-(4-deoxy-beta-D-gluc-4-enosyluronic acid)-D-galacturonic acid.
(2R,3R,4S)-2-[(2S,3R,4R,5R)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-3,4-dihydroxy-3,4-dihydro-2H-pyran-6-carboxylate