flugestone flugestone flugestone (inn, ban), also known as flurogestone, as well as 9α-fluoro-11β,17α-dihydroxyprogesterone, is a steroidal progestin of the 17α-hydroxyprogesterone group that was never marketed. an acetate ester, flurogestone acetate, is used in veterinary medicine. flugestoneidentifiers iupac name (8s,9r,10s,11s,13s,14s,17r)-17-acetyl-9-fluoro-11,17-dihydroxy-10,13-dimethyl-1,2,6,7,8,11,12,14,15,16-decahydrocyclopentaphenanthren-3-one cas number337-03-1pubchem cid254765chemspider223326uniint3et34748keggd07968comptox dashboard (epa)dtxsid0048765 echa infocard100.005.830 chemical and physical dataformulac21h29fo4molar mass364.457 g·mol−13d model (jsmol)interactive image smiles cc(=o)c1(ccc2c1(cc(c3(c2ccc4=cc(=o)ccc43c)f)o)c)o inchi inchi=1s/c21h29fo4/c1-12(23)20(26)9-7-15-16-5-4-13-10-14(24)6-8-18(13,2)21(16,22)17(25)11-19(15,20)3/h10,15-17,25-26h,4-9,11h2,1-3h3/t15-,16-,17-,18-,19-,20-,21-/m0/s1key:ofsxgkomegstse-bpssieeosa-n