1217-98-7 AI3-27116 BRN 1998646 ENT 27,116 O-(2-Chloro-1-(2,4-dichlorophenyl)ethenyl) O,O-dimethyl phosphorothioate OMS-775 Phosphorothioic acid, O-(2-chloro-1-(2,4-dichlorophenyl)ethenyl) O,O-dimethyl ester Phosphorothioic acid, O-(2-chloro-1-(2,4-dichlorophenyl)vinyl)O,O-dimethyl ester SD 9020 Shell SD-9020