The molecule is an UDP-sugar. It has a role as an Escherichia coli metabolite. It is a conjugate acid of an UDP-beta-L-threo-pentopyranos-4-ulose(2-).
[(2R,3R,4R)-3,4-dihydroxy-5-oxooxan-2-yl] [[(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] hydrogen phosphate