17581-48-5 Butanedioic acid, ((methyl(propylthio)phosphinothioyl)thio)-, diethyl ester Diethyl ((methyl(propylthio)phosphinothioyl)thio)butanedioate ENT 27,188 Mobil VC 3-789 Phosphonotrithioic acid, methyl-, S-propyl S-diethylsuccinate S-Propyl S-diethylsuccinate methyl phosphonotrithioate Succinic acid, mercapto-, diethyl ester, propyl methylphosphonotrithioate V-C 3-789 V-C Chemical 3-789 Virginia carolina 3-789