3'-Cyclohexylcarbonyl-4-formyl-1,1'-(oxydimethylene)dipyridinium diiodide 2-oxime 73944-45-3 BDB-37 Pyridinium, 3'-cyclohexylcarbonyl-4-formyl-1,1'-(oxydimethylene)di-, diiodide, 2-oxime