Cyclopentobarbital sodium (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. 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.
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References
Martin JR, Godel T, Hunkeler W, Jenck F, Moreau JL, Sleight AJ, Widmer U (December 2000). "Psychopharmacological agents.". Kirk-Othmer Encyclopedia of Chemical Technology. doi:10.1002/0471238961.1619250313011820.a01. ISBN 0471238961. 0471238961 ↩
Vander Brook MJ, Cartland GF (1944). "A Pharmacologic Study of 5-Allyl-5-Cyclopentenyl Barbituric Acid (Cyclopal)". Journal of Pharmacology and Experimental Therapeutics. 80 (2): 119–125. CiteSeerX 10.1.1.983.6071. /wiki/CiteSeerX_(identifier) ↩