The analgesic action of 1-fluorocodeine.
D000700:Analgesics; D000818:Animals; D003061:Codeine / Q000031:analogs & derivatives* / Q000494:pharmacology; D005461:Fluorine / Q000494:pharmacology; D051381:Rats; D013329:Structure-Activity Relationship
D000700:Analgesics; D005461:Fluorine; D003061:Codeine