The molecule is an organophosphate oxoanion obtained by removal of three protons from CMP-5'-phosphonoformic acid; major species at pH 7.3. It is a monocarboxylic acid anion and an organophosphate oxoanion. It is a conjugate base of a CMP-5'-phosphonoformic acid.
[[[(2R,3S,4R,5R)-5-(4-amino-2-oxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxy-oxidophosphoryl]formate