(4,4'-Biphenylylenebis(2-oxoethylene))bis((1-pentyl)dimethylammonium) dibromide 66855-79-6 AMMONIUM, (4,4'-BIPHENYLYLENEBIS(2-OXOETHYLENE))BIS((1-PENTYL)DIMETHYL-, DIBROMI Ammonium, (4,4'-biphenylylenebis(2-oxoethylene))bis((1-pentyl)dimethyl-, dibromide