The molecule is a doubly-charged nucleotide-sugar oxoanion arising from deprotonation of both free diphosphate OH groups of UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-hex-4-ulose; major species at pH 7.3. It is a conjugate base of an UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-hex-4-ulose.
[(2R,3R,4R,6R)-3-acetamido-4-hydroxy-6-methyl-5-oxooxan-2-yl] [[(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl] phosphate