The molecule is an amino trisaccharide consisting of a 3-O-sulfo-beta-D-glucuronic acid residue, a D-galactosyl residue and an N-acetyl-D-glucosamine residue (at the reducing end) in a linear sequence. It is an amino trisaccharide, a glucosamine oligosaccharide and an oligosaccharide sulfate. It is a conjugate acid of a beta-D-GlcA3S-(1->3)-beta-D-Gal-(1->4)-D-GlcNAc(2-).
(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-sulfooxyoxane-2-carboxylic acid