Quinestrol

Quinestrol
Clinical data
Trade names	Estrovis, others
Other names	Quinoestrol; Quinestrenol; Quinoestrenol; Ethinylestradiol 3-cyclopentyl ether; EECPE; EE2CPE; W-3566; 3-(Cyclopentyloxy)-17α-ethynylestra-1,3,5(10)-trien-17β-ol
AHFS/Drugs.com	Micromedex Detailed Consumer Information
Routes of; administration	By mouth
Drug class	Estrogen; Estrogen ether
ATC code	None;
Pharmacokinetic data
Elimination half-life	>120 hours (>5 days)
Identifiers
	IUPAC name (8R,9S,13S,14S,17R)-3-cyclopentyloxy-17-ethynyl-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-ol;
CAS Number	152-43-2 ;
PubChem CID	9046;
IUPHAR/BPS	7097;
DrugBank	DB04575 ;
ChemSpider	8694 ;
UNII	JR0N7XD5GZ;
KEGG	D00576 ;
ChEBI	CHEBI:8716 ;
ChEMBL	ChEMBL1201165 ;
CompTox Dashboard (EPA)	DTXSID6046553 ;
ECHA InfoCard	100.005.277
Chemical and physical data
Formula	C25H32O2
Molar mass	364.529 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES O(c1ccc2c(c1)CC[C@H]3[C@@H]4CC[C@](C#C)(O)[C@@]4(C)CC[C@H]23)C5CCCC5;
	InChI InChI=1S/C25H32O2/c1-3-25(26)15-13-23-22-10-8-17-16-19(27-18-6-4-5-7-18)9-11-20(17)21(22)12-14-24(23,25)2/h1,9,11,16,18,21-23,26H,4-8,10,12-15H2,2H3/t21-,22-,23+,24+,25+/m1/s1 ; Key:PWZUUYSISTUNDW-VAFBSOEGSA-N ;
	(verify)

Quinestrol, also known as ethinylestradiol cyclopentyl ether (EECPE), sold under the brand name Estrovis among others, is an estrogen medication which has been used in menopausal hormone therapy, hormonal birth control, and to treat breast cancer and prostate cancer.^[2]^[3] It is taken once per week to once per month by mouth.^[4]^[5]^[6]^[7]

^ Cite error: The named reference Sitruk-Ware_2012 was invoked but never defined (see the help page).
^ Zink C (1 January 1988). "Quinestrol". Dictionary of Obstetrics and Gynecology. Walter de Gruyter. pp. 204–. ISBN 978-3-11-085727-6.
^ Cite error: The named reference Peterson_1999 was invoked but never defined (see the help page).
^ Cite error: The named reference Quirk_2012 was invoked but never defined (see the help page).
^ Cite error: The named reference HorskyPresl2012 was invoked but never defined (see the help page).
^ Cite error: The named reference HawkinsElder2013 was invoked but never defined (see the help page).
^ Cite error: The named reference Bennett_1974 was invoked but never defined (see the help page).