norgestrienone norgestrienone norgestrienone, sold under the brand names ogyline, planor, and miniplanor, is a progestin medication which has been used in birth control pills, sometimes in combination with ethinylestradiol. it was developed by roussel uclaf and has been registered for use only in france. under the brand name planor, it has been marketed in france as 2 mg norgestrienone and 50 μg ethinylestradiol tablets. it is taken by mouth. norgestrienoneclinical datatrade namesogyline, planor, miniplanorother namesru-2010; a-301; 17α-ethynyltrienolone; 17α-ethynyltrenbolone; δ9,11-norethisterone; 17α-ethynylestra-4,9,11-trien-17β-ol-3-oneroutes ofadministrationby mouthdrug classprogestogen; progestin; androgen; anabolic steroidatc codeg03ac07 (who) identifiers iupac name (8s,13s,14s,17r)-17-ethynyl-17-hydroxy-13-methyl-1,2,6,7,8,14,15,16-octahydrocyclopentaphenanthren-3-one cas number848-21-5 ypubchem cid13313chemspider12749 yunii89386pyu9okeggd07220 ycomptox dashboard (epa)dtxsid30878491 echa infocard100.011.544 chemical and physical dataformulac20h22o2molar mass294.394 g·mol−13d model (jsmol)interactive image smiles o=c4\c=c3/c(=c2/c=c\1((cc1(c#c)o)2cc3)c)cc4 inchi inchi=1s/c20h22o2/c1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h1,8,10,12,17-18,22h,4-7,9,11h2,2h3/t17-,18+,19+,20+/m1/s1 ykey:gvdmjxqhpuyphp-fyqplnbisa-n y (verify) norgestrienone 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 some androgenic activity. norgestrienone was first described in the literature in 1965. it is sometimes referred to as a "second-generation" progestin. norgestrienone is no longer available. medical uses norgestrienone was used in hormonal contraception to prevent pregnancy. it has typically been used as an oral contraceptive at a dosage of 2 mg/day in combination with ethinylestradiol and 350 µ/day when used alone. side effects