<unk>  (INN) is a steroidal progestin which was never marketed. It is the parent drug of<unk>  acetate, a widely used progestogen and hormonal contraceptive.
Nomegestrol
Gestodene
Leuprolide
Proligeston
Tetrahydrogestrinone
Levonorgestrel 
Medroxyprogesterone acetate 
Ritiometan