title: Antinociceptive potency ratios for (+)- and (-)-4-dimethylamino-2,2-diphenylpentanoate (the ethyl ester analogue of methadone).
mesh_terms: D000700:Analgesics; D000818:Animals; D008691:Methadone / Q000031:analogs & derivatives* / Q000494:pharmacology; D051379:Mice; D051381:Rats; D011930:Reaction Time / Q000187:drug effects; D013237:Stereoisomerism
chemical_list: D000700:Analgesics; D008691:Methadone