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