The molecule is a UDP-N-acetyl-D-galactosamine 4,6-bissulfate in which the anomeric centre of the galactosamine fragment has alpha-configuration. It is a conjugate acid of an UDP-N-acetyl-alpha-D-galactosamine 4,6-bissulfate(4-).
[(2R,3R,4R,5R,6R)-3-acetamido-4-hydroxy-5-sulfooxy-6-(sulfooxymethyl)oxan-2-yl] [[(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] hydrogen phosphate