Methyltestosterone 3-hexyl ether (brand names Androgénol, Enoltestovis, Enoltestovister), or 17ñ-methyltestosterone 3-hexyl enol ether, also known as 17ñ-methylandrost-3,5-dien-17ò-ol-3-one 3-hexyl ether, is a synthetic anabolic-androgenic steroid and an androgen ether â specifically, the 3-hexyl ether of methyltestosterone.