Equilenin

Equilenin
Clinical data
Other names6,8-Didehydroestrone; Estra-1,3,5(10),6,8-pentaen-3-ol-17-one
Routes of
administration
By mouth
Drug classEstrogen
Identifiers
  • (13S,14S)-3-hydroxy-13-methyl-12,14,15,16-tetrahydro-11H-cyclopenta[a]phenanthren-17-one
CAS Number
PubChem CID
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.007.483
Chemical and physical data
FormulaC18H18O2
Molar mass266.340 g·mol−1
3D model (JSmol)
  • O=C4[C@]3(CCc1c(ccc2c1ccc(O)c2)[C@@H]3CC4)C
  • 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?)  (verify)

Equilenin, also known as 6,8-didehydroestrone, as well as estra-1,3,5(10),6,8-pentaen-3-ol-17-one, is a naturally occurring steroidal estrogen obtained from the urine of pregnant mares. It is used as one of the components in conjugated estrogens (brand name Premarin). It was the first complex natural product to be fully synthesized, in work reported by 1940 by Bachmann and Wilds.