The molecule is a UDP-N-acetyl-3-O-(1-carboxylatovinyl)-D-glucosamine(3-) in which the anomeric centre of the glucosamine fragment has alpha-configuration. It is a conjugate base of an UDP-N-acetyl-3-O-(1-carboxyvinyl)-alpha-D-glucosamine.
2-[(2R,3R,4R,5S,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]oxyprop-2-enoate