quingestanol acetate quingestanol acetate quingestanol acetate, sold under the brand names demovis and pilomin among others, is a progestin medication which was used in birth control pills but is no longer marketed. it is taken by mouth. quingestanol acetateclinical datatrade namesdemovis, pilomin, othersother namesw-4540; norethisterone acetate 3-cyclopentyl enol ether; 17α-ethynyl-19-nortestosterone acetate 3-cyclopentyl enol ether; entacp; (17β)-3-(cyclopentyloxy)-17-ethynylestra-3,5-dien-17-yl acetateroutes ofadministrationby mouthdrug classprogestogen; progestin; progestogen esteratc codeg03ac04 (who) g03aa02 (who) (with an estrogen)legal statuslegal status in general: ℞ (prescription only) identifiers iupac name phenanthren-17-yl] acetate cas number3000-39-3pubchem cid18142drugbankdb14679chemspider17136uniim33ggz63kgchebichebi:135661chemblchembl2105291comptox dashboard (epa)dtxsid50952409 echa infocard100.019.163 chemical and physical dataformulac27h36o3molar mass408.582 g·mol−13d model (jsmol)interactive image smiles o=c(o5(c#c)cc45(c)cc32c(\c=c(\oc1cccc1)cc2)=c/c34)c inchi inchi=1s/c27h36o3/c1-4-27(30-18(2)28)16-14-25-24-11-9-19-17-21(29-20-7-5-6-8-20)10-12-22(19)23(24)13-15-26(25,27)3/h1,9,17,20,22-25h,5-8,10-16h2,2-3h3/t22-,23+,24+,25-,26-,27-/m0/s1key:flgjkppxekycby-akcfygdasa-n quingestanol acetate is a progestin, or a synthetic progestogen, and hence is an agonist of the progesterone receptor, the biological target of progestogens like progesterone. it has weak androgenic and estrogenic activity and no other important hormonal activity. the medication is a prodrug of norethisterone in the body, with quingestanol and norethisterone acetate occurring as intermediates. quingestanol acetate was patented in 1963 and was introduced for medical use in 1972. it was marketed in italy. medical uses quingestanol acetate was used as an oral, once-a-month, or postcoital hormonal contraceptive. side effects