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