Dimethandrolone undecanoate (7α,11β-Dimethyl-17β-hydroxyestr-4-en-3-one 17-undecanoate) exhibits withrogens and progesterone activity. Dimethandrolone undecanoate inhibits production of gonadotropins, suppresses testosterone production, and thus inhibits sperm production. Dimethandrolone undecanoate is potent for development of male hormone contraceptives[1].
References
[1] Yuen F, et al., Comparison of metabolic effects of the progestational androgens dimethandrolone undecanoate and 11β-MNTDC in healthy men. Andrology. 2021 Sep;9(5):1526-1539. DOI:10.1111/andr.13025