The molecule is a carbohydrate acid derivative anion obtained by deprotonation of the carboxy groups of N-acetyl-beta-D-glucosaminyl-(1->4)-[hyaluronic acid]; major species at pH 7.3. It is a carbohydrate acid derivative anion and a polyanionic polymer. It derives from a hyaluronate.
(2S,3S,4R,5R,6R)-6-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3-[(2S,3R,4R,5S,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4,5-dihydroxyoxane-2-carboxylate