53490-78-1 BRN 2872007 Debromoleptophos Desbromoleptophos O-(2,5-Dichlorophenyl) O-methyl phenyl thiophosphonate O-(2,5-Dichlorophenyl) O-methyl phenylphosphonothioate PHOSPHONOTHIOIC ACID, PHENYL-, O-(2,5-DICHLOROPHENYL) O-METHYL ESTER