18519-74-9 6,6'-(p-Phenylenebis(carbonylimino))bis(1-ethylquinolinium) ditosylate Quinolinium, 6,6'-(p-phenylenebis(carbonylimino))bis(1-ethyl-, ditosylate Quinolinium, 6,6'-(terephthaloyldiimino)bis(1-ethyl-, di-p-toluenesulfonate