metynodiol diacetate metynodiol diacetate methynodiol diacetate (usan) (developmental code name sc-19198), or metynodiol diacetate, also known as 11β-methyletynodiol diacetate, is a steroidal progestin of the 19-nortestosterone group which was patented in 1968 but was never marketed. it is the diacetate ester of metynodiol, which, similarly, was never marketed. metynodiol diacetateclinical dataother namesmetynodiol diacetate; sc-19198; 11β-methyletynodiol diacetate; 11β-methyl-19-norpregn-4-en-20-yne-3β,17α-diyl diacetate; 11β-methyl-17α-ethynylestr-4-ene-3β,17β-diol diacetatedrug classprogestogen; progestogen esteridentifiers iupac name (1s,2r,5s,10r,11s,14r,15s,17s)-5-(acetyloxy)-14-ethynyl-15,17-dimethyltetracycloheptadec-6-en-14-yl acetate cas number23163-51-1pubchem cid10408585chemspider8584022unii2bc0lm6i2mkeggd05003chemblchembl2106950comptox dashboard (epa)dtxsid30945839 chemical and physical dataformulac25h34o4molar mass398.543 g·mol−13d model (jsmol)interactive image smiles cc1cc2(c(ccc2(c#c)oc(=o)c)c3c1c4ccc(c=c4cc3)oc(=o)c)c inchi inchi=1s/c25h34o4/c1-6-25(29-17(4)27)12-11-22-21-9-7-18-13-19(28-16(3)26)8-10-20(18)23(21)15(2)14-24(22,25)5/h1,13,15,19-23h,7-12,14h2,2-5h3/t15-,19-,20-,21-,22-,23+,24-,25-/m0/s1key:gfidknmxiyhury-yihnmzodsa-n