Butyrfentanyl

Butyrfentanyl (butyrylfentanyl) is a potent, short-acting mu-opioid receptor agonist and fentanyl analog differing by a single methyl group. With a molecular formula of C23H30N2O and mass of 350.50 g/mol, pre-clinical studies indicate Butyrfentanyl is approximately 30 times less potent than fentanyl. It has no approved medical indications and is associated with reported fatal overdoses. Researchers who purchase Butyrfentanyl for in vitro studies will find it available for analytical reference purposes only.