What is "methohexital"

n. A barbiturate-derived drug used as an anesthetic.

Methohexital or methohexitone (marketed under the brand name Brevital) is a drug which is a barbiturate derivative. It is classified as short-acting, and has a rapid onset of action. It is similar in its effects to sodium thiopental, a drug with which it competed in the market for anaesthetics.