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Home › 17-Cyclobutylmethyl-4,5.alpha.-e poxy-3-hydroxy-14-methoxy-8.alpha.-methylmorphinan-6-one, and method of treating pain with it

17-Cyclobutylmethyl-4,5.alpha.-e poxy-3-hydroxy-14-methoxy-8.alpha.-methylmorphinan-6-one, and method of treating pain with it

US Patent 4232028 · Granted Nov 4, 1980

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