14796-58-8 3,3'-(Terephthaloylbis(imino-p-phenylene))bis(1-ethylpyridinium) di-p-toluenesulfonate 3,3'-(Terephthaloyldiiminobis(p-phenylene))bis(1-ethylpyridinium ) di-p-toluenesulfonate Pyridinium, 3,3'-(terephthaloylbis(imino-p-phenylene))bis(1-ethyl-, di-p-toluenesulfonate