Ethyl 6-bromo-4-(difluoromethyl)-3-iodopyridine-2-acetate
Ethyl 3-bromo-2-(difluoromethyl)-6-fluoropyridine-5-carboxylate
Methyl 4-bromo-3-(difluoromethyl)-5-methoxypyridine-2-carboxylate
Ethyl 3-bromo-2-(difluoromethyl)-5-fluoropyridine-6-carboxylate