|Systematic (IUPAC) name|
|(5α)-4,5-Epoxy- 3,14-dihydroxy- 17-(2-methoxyethyl) morphinan- 6-one|
|Mol. mass||345.39 g/mol|
Semorphone is a partial agonist at μ-opioid receptors. It is around twice the potency of morphine, but with a ceiling effect on both analgesia and respiratory depression which means that these effects stop becoming any stronger after a certain maximum dose.
It is not currently used in medicine, and is not a controlled drug, although it might be considered to be a controlled substance analogue of oxymorphone on the grounds of its related chemical structure in some jurisdictions such as the USA, Canada, Australia and New Zealand.