title: The pharmacology of TR5109, a new narcotic agonist/antagonist analgesic.
mesh_terms: D000700:Analgesics / Q000494:pharmacology*; D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D003061:Codeine / Q000031:analogs & derivatives*; D006168:Guinea Pigs; D006853:Hydrocodone / Q000031:analogs & derivatives* / Q000494:pharmacology; D008297:Male; D051379:Mice; D009292:Narcotic Antagonists / Q000494:pharmacology*; D051381:Rats
chemical_list: D000700:Analgesics; D009292:Narcotic Antagonists; D006853:Hydrocodone; C025489:codorphone; D003061:Codeine