The molecule is the dianion resulting from the removal of two protons from the phosphate group of 5-amino-6-(5-phospho-D-ribosylamino)uracil. It is a conjugate base of a 5-amino-6-(5-phospho-beta-D-ribosylamino)uracil.
[(2R,3S,4R,5R)-5-[(5-amino-2,4-dioxo-1H-pyrimidin-6-yl)amino]-3,4-dihydroxyoxolan-2-yl]methyl phosphate