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