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Title: Alphenal  
Author: World Heritage Encyclopedia
Language: English
Subject: Barbiturate, CGS-8216, CP-615,003, Heptobarbital, Nealbarbital
Publisher: World Heritage Encyclopedia


Systematic (IUPAC) name
Clinical data
Legal status
  • US: Rx-only, Schedule III
Routes of
CAS Registry Number  YesY
ATC code None
PubChem CID:
ChemSpider  YesY
Synonyms 5-Phenyl-5-allylbarbituric acid
Chemical data
Formula C13H12N2O3
Molecular mass 244.246 g/mol

Alphenal (Alphenal, Efrodal, Prophenal, Sanudorm), also known as 5-allyl-5-phenylbarbituric acid, is a barbiturate derivative developed in the 1920s.[1] It has primarily anticonvulsant properties, and was used occasionally for the treatment of epilepsy or convulsions, although not as commonly as better known barbiturates such as phenobarbital.[2][3] [4][5]

LD50: Mouse (Oral): 280 mg/kg


  1. ^ DE Patent 526854
  2. ^ Carissimi M, Nuovi Barbiturici Alogenati. Farmaco. Ediozione scientifica. 17(6):390-413. (1962).
  3. ^
  4. ^
  5. ^

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