Methyl 4-(difluoromethyl)-5-fluoro-3-nitropyridine-2-acetate
Methyl 3-(bromomethyl)-2-(difluoromethyl)-5-fluoropyridine-4-acetate
3-(Chloromethyl)-2-(difluoromethyl)-4-fluoropyridine-6-acetonitrile
2-(Difluoromethyl)-3-hydroxy-4-iodo-6-methoxypyridine