Benzylidene methyl phosphorodithioate O,O,O',O'-Tetramethyl S,S'-(phenylmethylene)diphosphorodithioate Phosphorodithioic acid, S,S′-(phenylmethylene) O,O,O′,O′-tetramethyl ester Phosphorodithioic acid, S,S′-benzylidene O,O,O′,O′-tetramethyl ester S,S′-Benzylidene bis(O,O-dimethyl phosphorodithioate) SD 7438 Toluene-α,α-dithiol bis(O,O-dimethyl phosphorodithioate)