Ethyl 2-(difluoromethyl)-3-hydroxy-4-iodopyridine-5-carboxylate
Methyl 2-(bromomethyl)-4-(difluoromethyl)-6-fluoropyridine-3-acetate
Methyl 4-(difluoromethyl)-6-hydroxy-3-iodopyridine-2-carboxylate
3-(Chloromethyl)-2-(difluoromethyl)-6-fluoro-4-(trifluoromethyl)pyridine