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