title: A synthetic enkephalin analogue with prolonged parenteral and oral analgesic activity.
mesh_terms: D000284:Administration, Oral; D000700:Analgesics; D000818:Animals; D004745:Enkephalins / Q000378:metabolism / Q000494:pharmacology*; D000882:Haplorhini; D066298:In Vitro Techniques; D007267:Injections; D051379:Mice; D009020:Morphine / Q000494:pharmacology; D009270:Naloxone / Q000494:pharmacology; D009842:Oligopeptides / Q000494:pharmacology*; D051381:Rats; D011957:Receptors, Opioid / Q000378:metabolism
chemical_list: D000700:Analgesics; D004745:Enkephalins; D009842:Oligopeptides; D011957:Receptors, Opioid; D009270:Naloxone; D009020:Morphine