18-Methyltestosterone
18-Methyltestosterone is an androgen/anabolic steroid which was never marketed. Along with 19-nortestosterone and 17α-ethynyltestosterone, it is a parent structure of a number of progestogens and AAS. These include the progestogens levonorgestrel and its derivatives as well as AAS such as norboletone and tetrahydrogestrinone.