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