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