title: Opioid activity of a benzomorphan lacking an oxygen atom.
mesh_terms: D000818:Animals; D001575:Benzomorphans / Q000031:analogs & derivatives / Q000378:metabolism / Q000494:pharmacology*; D006168:Guinea Pigs; D066298:In Vitro Techniques; D009019:Morphinans / Q000494:pharmacology*; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects; D009270:Naloxone / Q000494:pharmacology; D009294:Narcotics; D011957:Receptors, Opioid / Q000378:metabolism; D012964:Sodium / Q000494:pharmacology; D013237:Stereoisomerism
chemical_list: D001575:Benzomorphans; D009019:Morphinans; D009294:Narcotics; D011957:Receptors, Opioid; D009270:Naloxone; D012964:Sodium