Ethyl 2-(bromomethyl)-3-(difluoromethyl)-6-methoxypyridine-5-carboxylate
Methyl 4-(bromomethyl)-3-(difluoromethyl)-2-methoxypyridine-6-carboxylate
Ethyl 2-(bromomethyl)-3-(difluoromethyl)-5-methoxypyridine-6-carboxylate
Ethyl 2-(bromomethyl)-3-(difluoromethyl)-4-methoxypyridine-6-carboxylate