2,3-Oxidosqualene

2,3-(S) Oxidosqualene ((S)-2,3-epoxysqualene) is an intermediate in the synthesis of the membrane sterol precursors lanosterol and cycloartenol, as well as saponins. It is formed from squalene by squalene monooxygenase. 2,3 oxidosqualene is the substrate of various oxidosqualene cyclases, including lanosterol synthase, which produces lanosterol, a precursor to cholesterol.

2,3-(R) Oxidosqualene is an inhibitor of lanosterol synthase.