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Systematic (IUPAC) name
CAS number 76-68-6
ATC code  ?
PubChem 6454
Chemical data
Formula C12H14N2O3 
Mol. mass 234.251 g/mol
Synonyms Allylpental, Cyclopental, Dormisan, 5-Allyl-5-Δ2-Cyclopentenyl Barbituric Acid
Pharmacokinetic data
Bioavailability  ?
Metabolism  ?
Half life  ?
Excretion  ?
Therapeutic considerations
Pregnancy cat.


Legal status
Routes  ?

Cyclopal (Dormisan) is a barbiturate derivative invented in the 1940s. It has sedative and anticonvulsant properties, and was used primarily as an anaesthetic in veterinary medicine. [1] Cyclopal is considered similar in effects to phenobarbital but lasts almost three times as long, and is considered a long-acting barbiturate with a fairly slow onset of action.


  1. ^ Vander Brook MJ, Cartland GF. A Pharmacologic Study of 5-Allyl-5-Cyclopentenyl Barbituric Acid (Cyclopal). Journal of Pharmacology And Experimental Therapeutics, 1944, 80(2): 119-125

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Cyclopal". A list of authors is available in Wikipedia.
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