1,1'-((Butane-1,4-diylbis(4,1-phenylene))bis(methylene))bis(4-(dimethylamino)pyridin-1-ium) bromide
1,1'-([1,1'-Biphenyl]-4,4'-diylbis(methylene))bis(4-((4-chlorophenyl)(methyl)amino)quinolin-1-ium) bromide
1,1'-(((Ethane-1,2-diylbis(oxy))bis(4,1-phenylene))bis(methylene))bis(4-(dimethylamino)pyridin-1-ium) bromide
