Norgesterone

Norgesterone
Clinical data
Trade names	Vestalin (with EETooltip ethinylestradiol)
Other names	Norvinodrel; Vinylestrenolone; Vinilestrenolone; Vinylnoretynodrel; 17α-Vinylestr-5(10)-en-17-ol-3-one; 17α-Vinyl-δ5(10)-19-nortestosterone
Routes of; administration	By mouth
Drug class	Progestogen; Progestin
ATC code	None;
Identifiers
	IUPAC name (8R,9S,13S,14S,17R)-17-ethenyl-17-hydroxy-13-methyl-1,2,4,6,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one;
CAS Number	13563-60-5;
PubChem CID	65606;
ChemSpider	59047;
UNII	YFS274763Y;
CompTox Dashboard (EPA)	DTXSID60159482 ;
Chemical and physical data
Formula	C20H28O2
Molar mass	300.442 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES CC12CCC3C(C1CCC2(C=C)O)CCC4=C3CCC(=O)C4;
	InChI InChI=1S/C20H28O2/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/h3,16-18,22H,1,4-12H2,2H3/t16-,17-,18+,19+,20+/m1/s1; Key:YPVUHOBTCWJYNQ-SLHNCBLASA-N;

Norgesterone, also known as norvinodrel or vinylestrenolone and sold under the brand name Vestalin, is a progestin medication which was formerly used in birth control pills for women but is now no longer marketed. It was used in combination with the estrogen ethinylestradiol. It is taken by mouth.

Norgesterone 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 no androgenic activity.

Norgesterone was first described in 1962. It is no longer available.