<unk> , also known as 17α-vinyl-19-nortestosterone or as 17α-vinylestr-4-en-17β-ol-3-one, is a synthetic estrane steroid and a derivative of testosterone and 19-nortestosterone. Analogues of<unk>  include the progestin norgesterone and the AAS vinyltestosterone.
Norvinisterone
Norethisterone
Androstanolone benzoate
Norethisterone acetate
Ethisterone
Lapisteride
Norethisterone enanthate
Gestrinone