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