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