2,5-Cyclohexadien-4-one, pentachloro-4-(diallylphosphono)- 73806-36-7 NSC 222699 O,O-Diallyl p-(4-keto-1,2,3,5,6-pentachloro-2,5-cyclohexadienyl)phosphonate Phosphonic acid, (1,2,3,5,6-pentachloro-4-oxo-2,5-cyclohexadien-1-yl)-, di-2-propenyl ester (9CI) Phosphonic acid, (4-oxo-1,2,3,5,6-pentachloro-2,5-cyclohexadienyl)-, diallyl ester