1-((4-Aminopyridinio)methoxymethyl)-4-((hydroxyimino)methyl)pyridinium dichloride 27918-53-2 Pyridinium, 1-((4-aminopyridinio)methoxymethyl)-4-formyl-, dichloride, oxime Pyridinium, 4-amino-4'-formyl-1,1'-(oxydimethylene)di-, dichloride, oxime