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