title: [Studies on potent analgesics. VI. Modification of 4-N-propionyl group of cis-3-methylfentanyl and analgesic activity].
mesh_terms: D000700:Analgesics / Q000138:chemical synthesis / Q000494:pharmacology*; D000818:Animals; D005260:Female; D005283:Fentanyl / Q000031:analogs & derivatives* / Q000494:pharmacology; D051379:Mice; D013329:Structure-Activity Relationship
chemical_list: D000700:Analgesics; C030592:3-methylfentanyl; D005283:Fentanyl