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