The molecule is an oligosaccharide sulfate consisting of 2-O-sulfo-beta-L-threo-hex-4-enopyranuronose and 2-deoxy-2-(sulfoamino)-beta-D-glucopyranose joined in sequence by a (1->4) glycosidic bond. It is a disaccharide, a member of sulfamic acids, an oligosaccharide sulfate, a monocarboxylic acid and an enol.
(2S,3R,4R)-2-[(2R,3S,4R,5R,6R)-4,6-dihydroxy-2-(hydroxymethyl)-5-(sulfoamino)oxan-3-yl]oxy-4,5-dihydroxy-3-sulfooxy-3,4-dihydro-2H-pyran-6-carboxylic acid