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