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