10265-93-7 AI3-27398 BAY 65258 Bayer 65258 ENT 27,398 NSC 133011 NSC 190989 O-Ethyl S-methyl phosphoramidothioate O-Ethyl S-methyl phosphoroamidothioate O-Ethyl-S-methyl thiophosphoramide Phosphoramidothioic acid, O-ethyl S-methyl ester