16758-33-1 23647-94-1 NSC 101327 Pyridinium, 3,3'-(1,4-phenylenebis(carbonylimino-4,1-phenylenecarbonylimino))bis(1-ethyl-, salt with 4-methylbenzenesulfonic acid (1:1) (9CI) Pyridinium, 3,3'-(terephthaloylbis(imino-p-phenylenecarbonylimino))bis(1-ethyl-, di-p-toluenesulfonate