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