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Skeletal formula
Ball-and-stick model of betamethadol
Clinical data
ATC code
  • None
Legal status
Legal status
CAS Number
PubChem CID
Chemical and physical data
Molar mass311.461 g/mol g·mol-1
3D model (JSmol)

Betamethadol (INN), or ?-methadol, also known as betametadol, is a synthetic opioid analgesic.[1] It is an isomer of dimepheptanol (methadol), the other being alphamethadol (?-methadol).[2] Betamethadol is composed of two isomers itself, L-?-methadol, and D-?-methadol.[2] Based on structure-activity relationships it can be inferred that both isomers are likely to be active as opioid analgesics, similarly to those of betacetylmethadol (?-acetylmethadol).[3]

See also


  1. ^ F.. Macdonald (1997). Dictionary of Pharmacological Agents. CRC Press. p. 1294. ISBN 978-0-412-46630-4. Retrieved 2012.
  2. ^ a b United Nations Office on Drugs and Crime (2006). Dictionnaire Multilingue Des Stupéfiants Et Des Substances Psychotropes Placés Sous Contrôle International. United Nations Publications. p. 103. ISBN 978-92-1-048117-5. Retrieved 2012.
  3. ^ Newman JL, Vann RE, May EL, Beardsley PM (October 2002). "Heroin discriminative stimulus effects of methadone, LAAM and other isomers of acetylmethadol in rats". Psychopharmacology. 164 (1): 108-14. doi:10.1007/s00213-002-1198-8. PMID 12373424.

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