39474-56-1 DDT-Dimethoate DDT-Rogor mixture Dimethoate-DDT Ethane, 1,1,1-trichloro-2,2-bis(p-chlorophenyl)-, compd. with phosphorodithioic acid O,O-dimethyl ester, S-ester with 2-mercapto-N-methyl acetamide Vantal