68413-47-8 Butanedioic acid, ((dipropoxyphosphinothioyl)thio)-, dibutyl ester Dibutyl ((dipropoxyphosphinothioyl)thio)succinate EINECS 270-219-6 Phosphorodithioic acid, O,O'-di-n-propyl-S-(1,2-dicarbobutoxyethyl)ester