Meperidine pharmacological properties

This drug is a structural analog of meperidine and loperamide however, it practically duplicates all of the pharmacological properties of loperamide. Being analogous to loperamide, it is mainly used for treating diarrhea. Synonyms for this drug are fentanest, lep-rofen, and others. 

Another example of the largest common substructure search is shown in Fig. 6. Although they differ greatly in structure from one another, morphine, meperidine, and methadone exhibit similar pharmacological activities (analgesic properties). By the search with level (4) expression, two connected graphs are... 

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