The molecule is the dianion obtained by removal of two protons from the phosphonic acid group of cidofovir. It is a pyrimidone and an organophosphonate oxoanion. It is a conjugate base of a member of cidofovir anhydrous and a cidofovir(1-).
4-amino-1-[(2S)-3-hydroxy-2-(phosphonatomethoxy)propyl]pyrimidin-2-one