Asoprisnil ecamate (J 956) is an orally active antiprogestin, and can be used for contraception[1].
References
[1] Jewgenow K, et al. Administration of antiprogestin J956 for contraception in bears: a pharmacological study. Theriogenology. 2001 Sep 1;56(4):601-11. DOI:10.1016/s0093-691x(01)00592-1
