The molecule is a branched amino trisaccharide consisting of N-acetyl-beta-D-galactosamine having 6-O-sulfo-beta-D-glucopyranosyl and N-acetyl-beta-D-galactosaminyl residues attached at the 3- and 6-positions respectively. It is an oligosaccharide sulfate and an amino trisaccharide. It is a conjugate acid of a N-acetyl-beta-D-galactosaminyl-(1->6)-[6-O-sulfonato-beta-D-glucosyl-(1->3)]-N-acetyl-beta-D-galactosamine.
[(2R,3S,4S,5R,6R)-6-[(2R,3R,4R,5R,6R)-5-acetamido-2-[[(2R,3R,4R,5R,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]-3,6-dihydroxyoxan-4-yl]oxy-3,4,5-trihydroxyoxan-2-yl]methyl hydrogen sulfate