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