The molecule is a monocarboxylic acid anion resulting from the removal of a proton from the carboxy group of beta-D-4-deoxy-Delta(4)-GlcpA-(1->3)-beta-D-GalpNAc. It is a monocarboxylic acid anion and a carbohydrate acid derivative anion. It is a conjugate base of a beta-D-4-deoxy-Delta(4)-GlcpA-(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-3,4-dihydroxy-3,4-dihydro-2H-pyran-6-carboxylate