Clinical data
ATC code none
Legal status
Legal status
Synonyms 5-isopropyl-5-(β-bromoallyl)barbituric acid
CAS Number 545-93-7 N
PubChem (CID) 11020
ChemSpider 10554 YesY
ECHA InfoCard 100.008.088
Chemical and physical data
Formula C10H13BrN2O3
Molar mass 289.126 g/mol
3D model (Jmol) Interactive image
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Propallylonal (trade names Nostal, Quietal, Ibomal) is a barbiturate derivative invented in the 1920s.[1] It has sedative, hypnotic and anticonvulsant properties,[2] and is still rarely prescribed as a sleeping medication in some Eastern-European countries.


  1. US patent 1622129
  2. Holck HG, Riedesel CC, Robidoux FA. Studies on tolerance and cross-tolerance to Nostal (propallylonal; isopropyl-beta-bromallyl barbituric acid. Journal of the American Pharmaceutical Association. 1950 Nov;39(11):630-7.

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