|CompTox Dashboard (EPA)|
|Chemical and physical data|
|Molar mass||329.396 g·mol−1|
|3D model (JSmol)|
|(what is this?)|
14-Methoxymetopon is an experimental opioid drug developed by a team led by Professor Helmut Schmidhammer at the University of Insbruck in the mid 1990s. It is a derivative of metopon in which a methoxy group has been inserted at the 14-position. It is a highly potent analgesic drug that is around 500 times stronger than morphine when administered systemically; however, when given spinally or supraspinally, it exhibits analgesic activity up to a million fold greater than morphine. It binds strongly to the μ-opioid receptor and activates it to a greater extent than most similar opioid drugs. This produces an unusual pharmacological profile, and although 14-methoxymetopon acts as a potent μ-opioid full agonist in regard to some effects such as analgesia, a ceiling effect is seen on other effects such as constipation and respiratory depression which is believed to involve interaction with the κ-opioid receptor
- US 5886001, "Agonist compounds"
- King MA, Su W, Nielan CL, Chang AH, Schütz J, Schmidhammer H, Pasternak GW (January 2003). "14-Methoxymetopon, a very potent mu-opioid receptor-selective analgesic with an unusual pharmacological profile". European Journal of Pharmacology. 459 (2–3): 203–9. doi:10.1016/S0014-2999(02)02821-2. PMID 12524147.
- Mahurter L, Garceau C, Marino J, Schmidhammer H, Tóth G, Pasternak GW (October 2006). "Separation of binding affinity and intrinsic activity of the potent mu-opioid 14-methoxymetopon". The Journal of Pharmacology and Experimental Therapeutics. 319 (1): 247–53. doi:10.1124/jpet.106.105395. PMID 16801454. S2CID 26268795.
- Freye E, Schmidhammer H, Latasch L (June 2000). "14-methoxymetopon, a potent opioid, induces no respiratory depression, less sedation, and less bradycardia than sufentanil in the dog". Anesthesia and Analgesia. 90 (6): 1359–64. doi:10.1097/00000539-200006000-00018. PMID 10825321. S2CID 32240231.