(1-(Acetyloxy)-2,2,2-trichloroethyl)phosphonic acid diphenyl ester 74548-80-4 APHOS O,O-Diphenyl (1-acetoxy-2,2,2-trichloroethyl)phosphonate Phosphonic acid, (1-(acetyloxy)-2,2,2-trichloroethyl)-, diphenyl ester