The molecule is an organophosphate oxoanion obtained by deprotonation of the phosphate OH groups as well as protonation of the endocyclic nitrogen at position 3 in the imidazole ring of 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate base of a 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole.
[(2R,3S,4R,5R)-5-(4-amino-1H-imidazol-3-ium-3-yl)-3,4-dihydroxyoxolan-2-yl]methyl phosphate