1498-54-0 Diethylphosphoramidic dichloride Diethylphosphoramidoyl dichloride N,N-Dichloro-P,P-diethylphosphinic amide N,N-Diethylphosphoramidic dichloride NSC 98709 Phosphoramidic dichloride, diethyl- (8CI)(9CI)