tert-Butyl 6-nitro-3',6'-dihydro-[3,4'-bipyridine]-1'(2'H)-carboxylate
3-(Bromomethyl)-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine-4-carbonyl chloride
3-Chloro-2-(methoxycarbonyl)-4-nitropyridine 1-oxide
3-Cyano-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride