((Diethoxyphosphinothioyl)thio)butanedioic acid bis((methylthio)methyl) ester 32744-43-7 AI3-27476 BRN 2225422 Butanedioic acid, ((diethoxyphosphinothioyl)thio)-, bis((methylthio)methyl) ester ENT 27,476 R-14016 Stauffer R-14016