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It is unusual in that one enantiomer is a pure μ-opioid agonist, while the other is an antagonist. The (3R,4R) isomer is the agonist, while (3S,4S) is antagonist. This means that the racemic mix of the two enantiomers is a mixed agonist-antagonist, with relatively low abuse potential, and little of the κ-opioid activity that tends to cause problems with other opioid mixed agonist-antagonists such as pentazocine.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Picenadol". A list of authors is available in Wikipedia.|