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methylnaltrexone
A methyl derivative of noroxymorphone with selective, opioid-receptor antagonistic activity. Methylnaltrexone displaces opioids from peripheral opioid receptors in the gastrointestinal tract, the bladder, and the skin, resulting in decreases in opioid-related constipation, urinary retention, and pruritis, respectively. Methylnaltrexone does not cross the blood-brain barrier and does not affect the centrally-mediated analgesic effect of opioids. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
| Synonym: | | N-methylnaltrexone bromide | | | | Abbreviation: | | MNTX | | | | Chemical structure name: | | 17-(Cyclopropylmethyl)-4,5alpha-epoxy-3,14-dihydroxy-17-methyl-6-oxomorphinanium | | |
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