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Systematic (IUPAC) name
CAS number 52-43-7
ATC code N05CA21
PubChem 5842
ChemSpider 5635
Chemical data
Formula C 10H12N2O3  
Mol. mass 208.214 g/mol
SMILES eMolecules & PubChem
Synonyms 5,5-Diallylbarbituric acid, Allobarbital
Pharmacokinetic data
Bioavailability  ?
Metabolism  ?
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Excretion  ?
Therapeutic considerations
Pregnancy cat.  ?
Legal status
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Allobarbital is a barbiturate derivative invented in 1912 by Ernst Preiswerk and Ernst Grether working for CIBA. It was used primarily as an anticonvulsant [1] although it has now largely been replaced by newer drugs with improved safety profiles. Other uses for allobarbital included as an adjutant to boost the activity of analgesic drugs, and use in the treatment of insomnia and anxiety.

Allobarbital was never particularly widely used compared to better known barbiturates such as phenobarbital and secobarbital, although it saw more use in some European countries such as Bulgaria and Slovakia,[2] and is still used in for example Poland, but only as compound[3].


  1. ^ Chocholova L, Radil-Weiss T. Effect of allobarbital on focal epilepsy in rats. Physiologia Bohemoslovaca. 1971;20(4):325-34.
  2. ^ Getova D, Georgiev V. GABA-ergic mechanisms in the anticonvulsive activity of newly-synthesized barbiturates. I. Effects of barbiturates on the convulsive action of GABA-antagonists. Acta Physiologica et Pharmacologica Bulgarica. 1987;13(3):43-50.
  3. ^,apteczka-babuni-krople-zoladkowe-krople-20-g.html


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