Methyl-6-alpha-Naltrexol is a metabolite of Methylnaltrexone (MNTX). Methylnaltrexone is a selective mu-opioid receptor antagonist and functions as a peripherally acting receptor antagonist in tissues of the gastrointestinal tract[1].
[1]. Appavu Chandrasekaran,et al. Metabolism of intravenous methylnaltrexone in mice, rats, dogs, and humans. Drug Metab Dispos. 2010 Apr;38(4):606-16.
















