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File:Furethylnorlevorphanol 3D BS.png

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English: Ro4-1539 (furethylnorlevorphanol) is an opioid analgesic drug from the morphinan series that was discovered by the pharmaceutical company Hoffmann–La Roche in the 1950s. It acts as a potent μ-opioid agonist, and was found to be around 30-60 times more potent than the related drug levorphanol in animal experiments. Although it has high potency, long duration, and good therapeutic index (1100 in animal studies), Ro4-1539 had no particular clinical advantages over other available opioid drugs, and was never commercially marketed.
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Ro4-1539 (furethylnorlevorphanol) is an opioid analgesic drug from the morphinan series that was discovered by the pharmaceutical company Hoffmann–La Roche in the 1950s.

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12 November 2022

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