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