ethyl(diethoxyphosphoryl)formate; Phosphonoformic Acid Triethyl Ester; Diethoxyphosphinecarboxylic Acid Ethyl Ester Oxide; Diethyl Carbethoxyphosphonate; Ethyl Diethylphosphonoformate; NSC 108684; Triethyl Carboxyphosphonate; Triethyl Phosphonoformate; USP Foscarnet Related Compound D