Review Article
Development of 5-Substituted N-Methylmorphinan-6-ones as Potent Opioid Analgesics with Improved Side-Effect Profile
Table 4
Comparison of antinociceptive potencies of 14-methoxymetopon (13) and its 14-phenylpropoxy substituted analogues 20 and 21, with morphine and etorphine.
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aDetermined in mice after s.c. administration [22]. |