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