19-Norpregnane


19-Norpregnane, also known as 13β-methyl-17β-ethylgonane, is a norsteroid and the 19-demethyl analogue of pregnane. It is the parent compound of 19-norprogesterone and derivatives of it such as the progestins demegestone, gestonorone caproate, nomegestrol acetate, norgestomet, promegestone, segesterone acetate, and trimegestone.