The molecule is a quadruply-charged nucleotide-sugar oxoanion obtained via deprotonation of the phosphate and diphosphate OH groups of UDP-N-acetyl-alpha-D-glucosamine 3-phosphate; major species at pH 7.3. It is a conjugate base of an UDP-N-acetyl-alpha-D-glucosamine 3-phosphate.
[(2R,3R,4R,5R,6R)-3-acetamido-2-[[[(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxy-oxidophosphoryl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl] phosphate