The molecule is a polysaccharide acid oxoanion arising from global deprotonation of the carboxylic and sulfonic acid groups of the repeating units in chondroitin 4',6'-disulfate; major species at pH 7.3. It derives from a chondroitin 6'-sulfate anion and a chondroitin 4'-sulfate anion.
(2S,3S,4S,5R,6R)-6-[(2R,3R,4R,5R,6R)-3-acetamido-2-hydroxy-5-sulfonatooxy-6-(sulfonatooxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate