The molecule is an organic sodium salt comprising alpha-D-GalpA-(1->4)-alpha-D-GalpA(2-) ions and sodium ions in a 2:1 ratio. It contains an alpha-D-GalpA-(1->4)-alpha-D-GalpA(2-).
disodium;(2S,3R,4S,5R,6S)-6-[(2S,3R,4R,5R,6S)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate