The molecule is a nucleotide-sugar oxoanion arising from deprotonation of the diphosphate and carboxy groups of UDP-L-iduronic acid; major species at pH 7.3. It is a nucleotide-sugar oxoanion and a carbohydrate acid derivative anion. It is a conjugate base of an UDP-L-iduronic acid.
(2R,3S,4S,5R)-6-[[[(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxy-oxidophosphoryl]oxy-3,4,5-trihydroxyoxane-2-carboxylate