CAS: 16669-06-0

Applications 17α-​Cyanomethylestra-​1,​3,​5(10)​-​triene-​3,​17β-​diol is an impurity of Dienogest (D441870), a derivative of 19-Nortestosterone. In combination with estrogen as oral contraceptive. Progestogen. References Hubner, M., et al.: Arzneim.-Forsch., 30, 401 (1980), Spona, J., et al.: Contraception, 56, 185 (1997), Foster, R.H., et al.: Drugs, 56, 825 (1998),