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