(1,1'-Biphenyl)-4,4'-diethanaminium, N,N'-bis(2-hydroxyethyl)-N,N,N',N'-tetramethyl-beta,beta'-dioxo-, dibromide (9CI) 4,4'-Biphenylenebis(2-oxoethylene)bis(dimethyl(2-hydroxyethyl)ammonium) dibromide 73-51-8 AMMONIUM, 4,4'-BIPHENYLENEBIS(2-OXOETHYLENE)BIS(DIMETHYL(2-HYDROXYETHYL)-, DIBRO Ammonium, 4,4'-biphenylenebis(2-oxoethylene)bis(dimethyl(2-hydroxyethyl)-, dibromide NSC 88900