18519-66-9 6,6'-(Pyridin-2,5-diylbis(carbonylimino))bis(1-ethylquinolinium) ditosylate Quinolinium, 6,6'-(2,5-pyridinediylbis(carbonylimino))bis(1-ethyl-, di-p-toluenesulfonate Quinolinium, 6,6'-(pyridin-2,5-diylbis(carbonylimino))bis(1-ethyl-, ditosylate