gestadienol gestadienol gestadienol (inn), also known as 6-dehydro-17α-hydroxy-19-norprogesterone, is a steroidal progestin of the 19-norprogesterone group that was never marketed. gestadienolclinical dataother namesnorhydroxy-δ6-progesterone; 6-dehydro-17α-hydroxy-19-norprogesterone; 17α-hydroxy-19-norpregn-4,6-diene-3,20-dioneidentifiers iupac name (8r,9s,10r,13s,14s,17r)-17-acetyl-17-hydroxy-13-methyl-1,2,8,9,10,11,12,14,15,16-decahydrocyclopentaphenanthren-3-one cas number58769-17-8pubchem cid219106chemspider189922unii25l129p05ycomptox dashboard (epa)dtxsid90974286 chemical and physical dataformulac20h26o3molar mass314.425 g·mol−13d model (jsmol)interactive image smiles cc(=o)c1(ccc2c1(ccc3c2c=cc4=cc(=o)ccc34)c)o inchi inchi=1s/c20h26o3/c1-12(21)20(23)10-8-18-17-5-3-13-11-14(22)4-6-15(13)16(17)7-9-19(18,20)2/h3,5,11,15-18,23h,4,6-10h2,1-2h3/t15-,16+,17+,18-,19-,20-/m0/s1key:gdtzpehtywxyar-xgxhktljsa-n