Myrophine
chemical compound
Myrophine (Myristylbenzylmorphine) is an opiate analogue that was developed in 1952. It is a derivative of morphine.
Myrophine is substituted with a 3-benzyl group and a 6-myristyl chain. It is metabolised to form benzylmorphine and then further to morphine, and so is a long-acting prodrug for morphine, but with a slow onset of effects. It is weaker than morphine as an analgesic but longer-lasting in effects, and was thought to have more local anesthetic effect than morphine, though with a somewhat greater tendency to cause reactions like itching and rash. In addiction studies conducted in human subjects in the 1950s, myrophine did not substitute for morphine in withdrawal, did not produce notable morphine-like effects, and did not produce addiction or dependence regardless of dose or how it was administered. Consequently, it was thought to be useful in treating pain in addicts who were being detoxified from other opioid drugs.
It is a Schedule I drug in the US, considered to have high potential for abuse and no medical applications, and is controlled under international drug conventions. Myrophine is almost invariably used as the hydrochloride (free base conversion ratio 0.94) and has a DEA Administrative Controlled Substance Control Number of 9308.
Myrophine is a Class A controlled substance in the UK, and is on the UN's Yellow list.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Jan 11, 2025. The linked authority identifier is Q6948508. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1952.
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This entry incorporates text from “Myrophine” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.