The molecule is a organosulfate oxoanion and monocarboxylic acid anion that results from the removal of a proton from both the carboxy group and the sulfate group of 4-deoxy-Delta(4)-beta-D-GlcpA2S-(1->3)-beta-D-GalpNAc. The major species at pH 7.3. It is a monocarboxylic acid anion, an organosulfate oxoanion and a carbohydrate acid derivative anion. It is a conjugate base of a 4-deoxy-Delta(4)-beta-D-GlcpA2S-(1->3)-beta-D-GalpNAc.
(2R,3R,4S)-2-[(2R,3R,4R,5R,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4-hydroxy-3-sulfonatooxy-3,4-dihydro-2H-pyran-6-carboxylate