4-Cyano-2-(difluoromethyl)-5-hydroxypyridine-3-sulfonamide
6-(Difluoromethyl)-4-nitro-3-(trifluoromethyl)pyridine-2-carboxaldehyde
6-Amino-2-(difluoromethyl)-3-fluoropyridine-4-carbonyl chloride
Ethyl 3-bromo-6-(chloromethyl)-4-(difluoromethyl)pyridine-2-acetate