3-(Bromomethyl)-2-(difluoromethyl)-4-methoxypyridine-5-acetonitrile
2-(Bromomethyl)-6-(difluoromethyl)-5-methoxypyridine-3-acetonitrile
2-(Bromomethyl)-6-(difluoromethyl)-3-methoxypyridine-5-acetonitrile
2-(Bromomethyl)-6-(difluoromethyl)-4-methoxypyridine-3-acetonitrile