dimethandrolone dimethandrolone dimethandrolone (dma), also known by its developmental code name cdb-1321, is an experimental androgen/anabolic steroid (aas) and progestogen medication which is under investigation for potential clinical use. this article is about a non-clinically used compound. for the experimental contraceptive, see dimethandrolone undecanoate. dimethandroloneclinical dataother namescdb-1321; dimethylnandrolone; 7α,11β-dimethyl-19-nortestosterone; 7α,11β-dimethylestr-4-en-17β-ol-3-one; 7α,11β-dimethyl-19-norandrost-4-en-17β-ol-3-oneroutes ofadministrationby mouthdrug classandrogen; anabolic steroid; progestogenidentifiers iupac name (7r,8r,9s,10r,11s,13s,14s,17s)-17-hydroxy-7,11,13-trimethyl-2,6,7,8,9,10,11,12,14,15,16,17-dodecahydro-1h-cyclopentaphenanthren-3-one cas number226066-52-0 366472-45-9 (undecanoate)pubchem cid9882863chemspider8058538uniiod742d6tj9chemical and physical dataformulac20h30o2molar mass302.458 g·mol−13d model (jsmol)interactive image smiles cc1cc2=cc(=o)ccc2c3c1c4ccc(c4(cc3c)c)o inchi inchi=1s/c20h30o2/c1-11-8-13-9-14(21)4-5-15(13)18-12(2)10-20(3)16(19(11)18)6-7-17(20)22/h9,11-12,15-19,22h,4-8,10h2,1-3h3/t11-,12+,15+,16+,17+,18-,19+,20+/m1/s1key:kvikzoggzhcgfh-rjmntablsa-n dimethandrolone is an aas, and hence is an agonist of the androgen receptor, the biological target of androgens like testosterone. it is also a progestin, or a synthetic progestogen, and hence is an agonist of the progesterone receptor, the biological target of progestogens like progesterone. due to its androgenic and progestogenic activity, dimethandrolone has antigonadotropic effects. it has no estrogenic activity. dimethandrolone was first described in 1997. it was developed by the contraceptive development branch of the national institute of child health and human development, an agency in the united states government. an ester and prodrug of dimethandrolone, dimethandrolone undecanoate (dmau) (cdb-4521), is under development for potential use as a birth control pill for men and in androgen replacement therapy for men. side effects