<unk>  (as known in the United States, or aprobarbitone (as known elsewhere), sold as Oramon, Somnifaine, and Allonal, is a barbiturate derivative invented in the 1920s by Ernst Preiswerk. It has sedative, hypnotic and anticonvulsant properties, and was used primarily for the treatment of insomnia.<unk>  was never as widely used as more common barbiturate derivatives such as phenobarbital and is now rarely prescribed as it has been replaced by newer drugs with a better safety margin.
Aprobarbital
Butabarbital
Proxibarbital
Heptabarbital
Butalbital
Bentoquatam
Cyclobarbital
Sarmazenil