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