4,4'-Biphenylenebis(2-oxoethylene)bis(diethyl(3-hydroxypropyl)ammonium) dibromide 77985-01-4 AMMONIUM, 4,4'-BIPHENYLENEBIS(2-OXOETHYLENE)BIS(DIETHYL(3-HYDROXYPROPYL)-, DIBRO Ammonium, 4,4'-biphenylenebis(2-oxoethylene)bis(diethyl(3-hydroxypropyl)-, dibromide