7-Acetoxymitragynine

7-Acetoxymitragynine is an opioid drug which is a semi-synthetic derivative of 7-hydroxymitragynine, a natural product derived from the South-East Asian tree kratom. It can be derived by acetylation of the hydroxyl group of 7-hydroxymitragynine, for instance with acetic anhydride, but can also be produced directly from mitragynine by reaction with Lead(IV) acetate, and is a common synthetic intermediate in the production of 7-hydroxymitragynine from crude kratom extracts. Unlike the higher potency seen with acetyl esters of some other opioids such as morphine, 7-acetoxymitragynine is less potent than 7-hydroxymitragynine, but nevertheless retains opioid activity and has been sold as a designer drug since around 2006.