Metynodiol

Metynodiol
Clinical data
Other names	11β-Methyl-19-norpregn-4-en-20-yne-3β,17α-diol; (3β,11β,17β)-17-ethynyl-11-methylestr-4-ene-3,17-diol
Identifiers
	IUPAC name (1S,2R,5S,10R,11S,14R,15S,17S)-14-ethynyl-15,17-dimethyltetracyclo[8.7.0.02,7.011,15]heptadec-6-ene-5,14-diol;
CAS Number	23163-42-0;
PubChem CID	10018547;
ChemSpider	8194120;
UNII	RY422150VY;
CompTox Dashboard (EPA)	DTXSID60177742 ;
Chemical and physical data
Formula	C21H30O2
Molar mass	314.469 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES CC1CC2(C(CCC2(C#C)O)C3C1C4CCC(C=C4CC3)O)C;
	InChI InChI=1S/C21H30O2/c1-4-21(23)10-9-18-17-7-5-14-11-15(22)6-8-16(14)19(17)13(2)12-20(18,21)3/h1,11,13,15-19,22-23H,5-10,12H2,2-3H3/t13-,15-,16-,17-,18-,19+,20-,21-/m0/s1; Key:DLTWUXUDIFVVOM-OSFPVTNASA-N;

Metynodiol (INN), or methynodiol, also known as 11β-methyletynodiol, is a steroidal progestin of the 19-nortestosterone group that was synthesized in the 1960s but was never marketed.^[1] A diacetate ester, metynodiol diacetate (SC-19198), also exists.^[1]