3070-19-7 BRN 2478137 Chlorthion ethyl Ethyl chlorthion Ethylchlorothion O,O-Diethyl O-(3-chloro-4-nitrophenyl) phosphorothioate O-(3-Chloro-4-nitrophenyl) O,O-diethyl phosphorothioate Phosphorothioic acid, O-(3-chloro-4-nitrophenyl) O,O-diethyl ester