Equilenin

Equilenin

Identifiers
IUPAC name 3-hydroxy-13-methyl-12,14,15,16-tetrahydro-11H-cyclopenta[a]phenanthren-17-one
CAS Number	517-09-9 N
PubChem CID	444865
DrugBank	DB03515 Y
ChemSpider	392668 Y
KEGG	C14303 Y
ChEMBL	CHEMBL225546 Y
ECHA InfoCard	100.007.483
Chemical and physical data
Formula	C18H18O2
Molar mass	266.339 g/mol
3D model (Jmol)	Interactive image
SMILES O=C4[C@]3(CCc1c(ccc2c1ccc(O)c2)[C@@H]3CC4)C
InChI InChI=1S/C18H18O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h2-5,10,16,19H,6-9H2,1H3/t16-,18-/m0/s1 Y Key:PDRGHUMCVRDZLQ-WMZOPIPTSA-N Y
NY (what is this?)

Equilenin, also known as 6,8-didehydroestrone, as well as estra-1,3,5(10),6,8-pentaen-3-ol-17-one, is an estrogenic steroid hormone obtained from the urine of pregnant mares. It is used as one of the components in Premarin. It was the first complex natural product to be fully synthesized.