C-8813
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Formula | C20H26BrNOS |
Molar mass | 408.40 g·mol−1 |
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C-8813 (thiobromadol) is a potent μ-opioid receptor agonist with a distinctive chemical structure which is not closely related to other established families of opioid drugs. The trans-isomer was found to be around 591 times more potent than morphine in animal studies.[1] The same study assigned a potency of 504 times that of morphine to the related compound BDPC.
C-8813 is claimed to be similarly potent at the δ-opioid receptor, which antagonizes the μ-induced depression of breathing, presumably making the drug safer.[1]
C-8813 has never been approved for use in humans.[citation needed]