The molecule is tetraanion of UDP-N-acetyl-D-galactosamine 4,6-bissulfate arising from deprotonation of diphosphate and sulfate groups; major species at pH 7.3. It is a nucleotide-sugar oxoanion and an organosulfate oxoanion. It is a conjugate base of an UDP-N-acetyl-D-galactosamine 4,6-bissulfate.
[(3R,4R,5R,6R)-3-acetamido-4-hydroxy-5-sulfonatooxy-6-(sulfonatooxymethyl)oxan-2-yl] [[(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl] phosphate