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