Ethyl 3-bromo-2-(difluoromethyl)-5-methoxypyridine-6-carboxylate
3-Bromo-6-(chloromethyl)-2-(difluoromethyl)-5-methylpyridine
Ethyl 3-bromo-2-(difluoromethyl)-4-methoxypyridine-6-carboxylate
Ethyl 6-bromo-2-(difluoromethyl)-3-methoxypyridine-4-carboxylate