The molecule is the carbohydrate acid derivative anion formed from beta-D-GlcA3S-(1->3)-beta-D-Gal-(1->4)-D-GlcNAc by loss of two protons, one from each of its sulfo and carboxy groups. It is a carbohydrate acid derivative anion and an organosulfate oxoanion. It is a conjugate base of a beta-D-GlcA3S-(1->3)-beta-D-Gal-(1->4)-D-GlcNAc.
(2S,3R,4S,5R,6R)-6-[(2S,3R,4S,5S,6R)-2-[(2R,3S,4R,5R)-5-acetamido-4,6-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,5-dihydroxy-4-sulfonatooxyoxane-2-carboxylate