The molecule is a carbohydrate acid derivative anion that is a polyanionic form of heparosan N-sulfate L-iduronic acid arising from global deprotonation of the carboxy and N-sulfo groups; major species at pH 7.3. It is an organic sulfamate oxoanion, a carbohydrate acid derivative anion and a carboxylic acid anion. It is a conjugate base of a heparosan N-sulfate L-iduronic acid.
(2R,3S,4S,5R,6R)-6-[(2R,3S,4R,5R,6S)-4,6-dihydroxy-2-(hydroxymethyl)-5-(sulfonatoamino)oxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate