Naloxegol
Naloxegol is an organic heteropentacyclic compound that is naloxone in which the keto group is replaced by a PEG moiety. Used for treatment of opioid-induced constipation. It has a role as a mu-opioid receptor antagonist and a cathartic. It is an organic heteropentacyclic compound, a member of phenols, an aromatic ether, a tertiary alcohol and a polyether. It is functionally related to a naloxone. It derives from a hydride of a morphinan.