2720-18-5 AI3-27375 CELA K-43 ENT 27,375 O-(2,5-Dichloro-4-bromophenyl) O-isopropyl methylphosphonothioate O-(4-Bromo-2,5-dichlorophenyl) O-(1-methylethyl)methylphosphonothioate OMS 989 Phosphonothioic acid, methyl-, O-(4-bromo-2,5-dichlorophenyl) O-(1-methylethyl) ester Phosphonothioic acid, methyl-, O-(4-bromo-2,5-dichlorophenyl) O-isopropyl ester