2-Cyano-3-(difluoromethyl)-5-methylpyridine-4-sulfonamide
Ethyl 2-chloro-4-(chloromethyl)-3-(difluoromethyl)pyridine-6-acetate
4-Fluoromethyl-3-iodo-2-(trifluoromethyl)pyridine
4-Nitro-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carbonyl chloride