The molecule is an amino hexasaccharide comprising an iduronic acid residue, an acetylated galactosamine residue, sulfated on O-4, a glucuronic acid residue, and two galactose residues, linked to a xylose residue at the reducing end. It is an intermediate in the dermatan sulfate degradation pathway.
(2S,3R,4R,5S,6R)-6-[(2S,3R,4R,5R,6R)-3-acetamido-2-[(2S,3S,4R,5R,6R)-2-carboxy-6-[(2S,3R,4S,5S,6R)-2-[(2R,3S,4S,5R,6S)-3,5-dihydroxy-2-(hydroxymethyl)-6-[(3R,4R,5R,6R)-4,5,6-trihydroxyoxan-3-yl]oxyoxan-4-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-6-(hydroxymethyl)-5-sulfooxyoxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid