4,4'-Biphenylenebis(2-oxoethylenebis(thiodimethyl)ammonium) dibromide 60872-42-6 AMMONIUM, 4,4'-BIPHENYLENEBIS(2-OXOETHYLENE)BIS((2-MERCAPTOETHYL)DIMETHYL-, DIBR Ammonium, 4,4'-biphenylenebis(2-oxoethylene)bis((2-mercaptoethyl)dimethyl-, dibromide Thio-seco-HC-3