(4,4'-Biphenylylenebis(2-oxoethylene))bis((4-oxopentyl)dimethylammonium) dibromide 58594-14-2 AMMONIUM, (4,4'-BIPHENYLYLENEBIS(2-OXOETHYLENE))BIS((4-OXOPENTYL)DIMETHYL-, DIBR Ammonium, (4,4'-biphenylylenebis(2-oxoethylene))bis((4-oxopentyl)dimethyl-, dibromide