Independent & reader-supported — every article medically reviewed

Hormones / Estrogens and progestins

Estradiol E2

The primary estrogen, prescribed in hormone therapy.

Also known as 17-beta estradiol, Estrace, beta-Estradiol, 17beta-Estradiol, Oestradiol, Dihydrofolliculin, Aquadiol, Diogynets

Effects Hormonal
Routes Injectable Oral Topical
Legal status Prescription drug
WADA Not listed

3D Molecular Structure of C18H24O2

Drag to rotate · scroll to zoom

  • Carbon
  • Hydrogen
  • Oxygen

Chemistry

Formula
C18H24O2
Molar mass
272.4
CAS
50-28-2
PubChem CID
5757
IUPAC name
(8R,9S,13S,14S,17S)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,17-diol
InChIKey
VOXZDWNPVJITMN-ZBRFXRBCSA-N

Variants

Name Abbr Route Notes
Estradiol valerate EV Injectable An injectable estrogen ester.
Estradiol cypionate EC Injectable A longer-acting injectable estrogen ester.