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Estetrol (E4, 15α-Hydroxyestriol) is an estrogen steroid hormone produced exclusively during pregnancy by the fetal liver. Estetrol is a selective estrogen receptor modulator (SERM) with potent estrogenic effects on vaginal mucosa, bone and brain, neutral effect on liver, and anti-estrogen effects on breast tissue. Estetrol has higher affinity for ERα over ERβ. Estetrol is being studied for its potential as a contraceptive, a drug for meopausal symptoms, and an anticancer agent.
| Molecular Weight | 304.38 |
| Formula | C18H24O4 |
| CAS Number | 15183-37-6 |
| Form | Solid |
| Solubility (25°C) | DMSO: 20 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
[1] Franca Fruzzetti, et al. Estetrol: A New Choice for Contraception
[2] Anne Gallez, et al. Estetrol and Mammary Gland: Friends or Foes?
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