The molecule is a nucleotide-sugar oxoanion arising from deprotonation of the diphosphate OH groups of UDP-N-acetyl-D-mannosamine; major species at pH 7.3. It is a conjugate base of an UDP-N-acetyl-D-mannosamine.
[(3S,4R,5S,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl] [[(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl] phosphate