1. Morphine metabolites;Christup;Acta Anaesthesiologica Scandinavica,1997
2. Morphine-6-glucuronide, a potent mu agonist;Pasternak;Life Sciences,1987
3. Morphine-6-glucuronide is more mu selective and potent in analgesic tests than morphine;Francés;Progress in Clinical and Biological Research,1990
4. Morphine-6-glucuronide receptor binding profile in bovine caudate nucleus;Christensen;Pharmacology and Toxicology,1991
5. Further evidence that Morphine-6α-Glucuronide is a more potent opioid agonist than morphine;Francés;Journal of Pharmacology and Experimental Therapeutics,1992