1942-80-9 BRN 2110180 ENT 27,309 N-4988 Phosphonodithioic acid, ethyl-, S-(4-chloro-3-methylphenyl) O-methyl ester Phosphonodithioic acid, ethyl-, S-4-chloro-m-tolyl O-methyl ester S-(4-Chloro-3-methylphenyl) O-methyl phosphonodithioate Stauffer N-4988