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