25221-20-9 3-Carbamoyl-4'-formyl-1,1-(oxydimethylene)dipyridinium dichloride 4'-oxime HI 1 HJ 1 Pyridinium, 3-(aminocarbonyl)-1-(((4-((hydroxyimino)methyl)pyridinio)methoxy)methyl)-, 2Cl Pyridinium, 3-carbamoyl-4'-formyl-1,1-(oxydimethylene)di-, dichloride, 4'-oxime