63869-31-8 ENT 25,770 N-2860 Phosphonodithioic acid, ethyl-, S-(((4-chlorophenyl)thio)methyl) O-ethyl ester Phosphonodithioic acid, ethyl-, S-(((p-chlorophenyl)-thio)methyl) O-ethyl ester S-(((4-Chlorophenyl)thio)methyl) O-ethyl phosphonodithioate Stauffer N-2860