potassium glutaconaldehyde

N-((4-Amino-6-methyl-3-pyridylcarbonyl)methyl)pyridinium-hydrobromid

1-(hydroxyimino-tert-butyl)-pyridinium, chloride

pyridinium-BF3 adduct

2,2,2-trichloroethyl 4-(2-((tert-butyldimethylsilyl)oxy)-2-phenylvinyl)pyridine-1(4H)-carboxylate