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Legal status
  • In general: legal
PubChem CID
E number{{#property:P628}}
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Chemical and physical data
Molar mass408.394 g/mol
3D model (JSmol)

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


C-8813 is a potent μ-opioid agonist with a distinctive chemical structure which is not closely related to other established families of opioid drugs. It was found to be around 591x more potent than morphine in animal studies.[1]

C-8813 has never been used in humans, but would be expected to produce effects similar to those of other potent opioid agonists, including strong analgesia, sedation, euphoria, constipation, itching and respiratory depression which could be harmful or fatal.

See Also


  1. Liu ZH, Jin WQ, Dai QY, Chen XJ, Zhang HP, Chi ZQ. Opioid activity of C8813, a novel and potent opioid analgesic. Life Sciences. 2003 May 30;73(2):233-41. PMID 12738037


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