1-(3-Acetylpyridinio)methoxymethyl-2-((hydroxyimino)methyl)pyridinium dichloride 3'-Acetyl-2-formyl-1,1'-(oxydimethylene)dipyridinium dichloride 2-oxime HGG 21 dichloride Pyridinium, 3'-acetyl-2-formyl-1,1'-(oxydimethylene)di-, dichloride, 2-oxime UU1455000