Ethyl 3-(bromomethyl)-6-(difluoromethyl)-4-methoxypyridine-2-carboxylate
Ethyl 5-(bromomethyl)-2-(difluoromethyl)-3-methoxypyridine-6-carboxylate
Ethyl 4-(bromomethyl)-5-(difluoromethyl)-3-methoxypyridine-2-carboxylate
2-(Bromomethyl)-6-(difluoromethyl)-5-methoxypyridine-3-acetic acid