The molecule is a carbohydrate acid derivative anion arising from deprotonation of the carboxylic acid and sulfate groups of the repeating units and protonation of the free amino group on the glucosamine of heparan sulfate alpha-D-glucosaminide; major species at pH 7.3. It is an organic sulfamate oxoanion, a carbohydrate acid derivative anion and an ionic polymer. It is a conjugate base of a heparan sulfate alpha-D-glucosaminide.
(2R,3S,4S,5R,6R)-3-[(2R,3R,4R,5S,6R)-3-azaniumyl-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-[(2R,3S,4R,5R,6S)-4,6-dihydroxy-5-(sulfonatoamino)-2-(sulfonatooxymethyl)oxan-3-yl]oxy-4-hydroxy-5-sulfonatooxyoxane-2-carboxylate