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