???? ???????????? 3′,5′-???????? ????????? ??(?????)??? 1-?????, ?? ??? 2-(?????)????? ??????? DIETHYL VINYLPHOSPHONATE Dibenzyl phosphate Dibenzyl phosphite ADENOSINE-2':3'-CYCLIC MONOPHOSPHATE, SODIUM SALT BIS(2,2,2-TRICHLOROETHYL) PHOSPHOROCHLORIDATE diethyl benzylphosphonate DIETHYL 4-AMINOBENZYLPHOSPHONATE Bucladesine sodium TRIMETHYLSILYL DIETHYLPHOSPHONOACETATE Diethyl cyanomethylphosphonate