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Home › 7-Methyl-8.beta.-lower alkyl or 7-methyl-8-lower alkyl B/C cis or trans morphinan-6-one compounds and therapeutic method of treating pain employing them

7-Methyl-8.beta.-lower alkyl or 7-methyl-8-lower alkyl B/C cis or trans morphinan-6-one compounds and therapeutic method of treating pain employing them

US Patent 4230712 · Granted Oct 28, 1980

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