|Systematic (IUPAC) name|
|(5α,6α)-17-allyl- 7,8-didehydro- 4,5-epoxymorphinan- 3,6-diol|
|Legal status||Prescription Only (S4) (AU)|
|Synonyms||(−)−(5R,6S)-9α-allyl- 4,5-epoxymorphin- 7-en- 3,6-diol|
|Mol. mass||311.375 g/mol|
|(what is this?)|
Nalorphine (INN; Lethidrone, Nalline), also known as N-allyl-normorphine, is a mixed opioid agonist-antagonist. It acts at two opioid receptors, at the mu receptor it has antagonistic effects and at the kappa receptors it exerts high-efficacy agonistic characteristics. It is used to reverse opioid overdose and (starting in the 1950s) in a challenge test to determine opioid dependence.
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