Tosagestin (INNTooltip International Nonproprietary Name, USANTooltip United States Adopted Name) (developmental code name ORG-30659), also known as 11-methylene-δ15-norethisterone or 17α-ethynyl-11-methylene-19-nor-δ15-testosterone, is a progestin of the 19-nortestosterone group which was under development by Organon in the United States and Europe as a hormonal contraceptive (in combination with ethinylestradiol) and for the treatment of menopausal symptoms but was never marketed.[2][3][4][5][6]
^de Visser SJ, Uchida N, van Vliet-Daskalopoulou E, Fukazawa I, van Doorn MB, van den Heuvel MW, et al. (September 2003). "Pharmacokinetic differences between Caucasian and Japanese subjects after single and multiple doses of a potential combined oral contraceptive (Org 30659 and EE)". Contraception. 68 (3): 195–202. doi:10.1016/S0010-7824(03)00140-9. PMID14561540.