16760-16-0 NSC103334 Pyridinim, 3,3'-[terephthaloylbis[imino(2-amino-p-phenylene)carbonylimino]]bis[1-ethyl-, di-p-toluenesulfonate Pyridinium, 3,3'-[1,4-phenylenebis[carbonylimino(2-amino-4,1-phenylene)carbonylimino]]bis[1-ethyl-, salt with 4-methylsulfonic acid (1:1)