Chemistry:Ethinamate
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| AHFS/Drugs.com | Micromedex Detailed Consumer Information |
| Routes of administration | Oral |
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| Formula | C9H13NO2 |
| Molar mass | 167.208 g·mol−1 |
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Ethinamate (Valamin, Valmid) is a short-acting carbamate-derivative sedative-hypnotic medication used to treat insomnia. Regular use leads to drug tolerance, and it is usually not effective for more than 7 days. Prolonged use can lead to dependence.[citation needed]
Ethinamate has been replaced by other medicines (particularly benzodiazepines), and it is not available in the Netherlands, the United States or Canada .[citation needed]
It is a schedule IV substance in the United States.[1]
Synthesis
Ethinamate (1-ethynylcyclohexanone carbamate) is synthesized by combining acetylene with cyclohexanone to make 1-ethynylcyclohexanol, and then transforming this into a carbamate by the subsequent reaction with phosgene, and later with ammonia. Some lithium metal or similar is used to make the acetylene react with the cyclohexanone in the first step.[2][3]
References
- ↑ "Ethinamate". Forensic Toxicology: Controlled Substances and Dangerous Drugs. Boston, MA: Springer US. 1979. p. 215. ISBN 978-1-4684-3444-6. https://books.google.com/books?id=szDnBwAAQBAJ&dq=Ethinamate&pg=PA215.
- ↑ Pfeiffer H, Junkman K, "Esters of carbamic acid and a method of making same", US patent 2816910, issued 17 December 1957, assigned to Schering AG
- ↑ Emde H, Grimme W, "Verfahren zur Herstellung des Allophanats des 1-AEthinylcyclohexanols-(1)", DE patent 1021843, issued 2 January 1958, assigned to Rheinpreussen AG
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