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