The molecule is a UDP-N-acetyl-D-galactosamine 4-sulfate 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-sulfate(3-).
[(2R,3R,4R,5R,6R)-3-acetamido-4-hydroxy-6-(hydroxymethyl)-5-sulfooxyoxan-2-yl] [[(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] hydrogen phosphate