Date published: 2026-5-18

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Estriol (CAS 50-27-1)

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Alternate Names:
16α-hydroxy-17β-estradiol; 1,3,5(10)-Estratriene-3,16α,17β-triol
Application:
Estriol is an estradiol metabolite shown to protect against mammary carcinogenisis
CAS Number:
50-27-1
Purity:
>95%
Molecular Weight:
288.38
Molecular Formula:
C18H24O3
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Estriol acts as an antagonist of the GPR30-dependent pathway. Estriol′s efficacy is due to the interference between estradiol-induced positive cooperative binding and receptor dimerization, as well as the binding of hER complexes to ERE. Estriol is an inhibitor of GPR30.


Estriol (CAS 50-27-1) References

  1. Effects of estriol on the proliferation and differentiation of human osteoblastic MG-63 cells.  |  Luo, XH. and Liao, EY. 2003. Endocr Res. 29: 343-51. PMID: 14535635
  2. Prevention of mammary carcinogenesis by short-term estrogen and progestin treatments.  |  Rajkumar, L., et al. 2004. Breast Cancer Res. 6: R31-7. PMID: 14680498
  3. Efficacy of low-dose intravaginal estriol on urogenital aging in postmenopausal women.  |  Dessole, S., et al. 2004. Menopause. 11: 49-56. PMID: 14716182
  4. Regiospecificity and stereospecificity of human UDP-glucuronosyltransferases in the glucuronidation of estriol, 16-epiestriol, 17-epiestriol, and 13-epiestradiol.  |  Sneitz, N., et al. 2013. Drug Metab Dispos. 41: 582-91. PMID: 23288867
  5. Estriol and its conjugates in late pregnancy determined by extraction with Carbopack B and liquid chromatography with fluorometric detection.  |  Andreolini, F., et al. 1985. Clin Chem. 31: 1698-702. PMID: 2994907
  6. A simple radioimmunoassay for estriol 3-sulfate in pregnancy plasma without deconjugation.  |  Tanaka, T., et al. 1985. Steroids. 46: 649-57. PMID: 3837408
  7. Estriol radioimmunoassay in plasma and urine.  |  Castro, A., et al. 1985. Res Commun Chem Pathol Pharmacol. 50: 291-9. PMID: 4081318
  8. [Value of the rapid determination of estriol and creatinine during course of the last trimester of pregnancy on the 1st morning urine].  |  Goldberg, S., et al. 1972. Rev Fr Gynecol Obstet. 67: 127-9. PMID: 5053625
  9. Preliminary isolation of urinary placental estriol before gas or liquid chromatography.  |  Andreolini, F., et al. 1983. Clin Chem. 29: 2076-8. PMID: 6640903
  10. Salivary estriol concentrations during normal pregnancies, and a comparison with plasma estriol.  |  Evans, JJ., et al. 1984. Clin Chem. 30: 120-1. PMID: 6690116
  11. Uterine vascular effects of estetrol in nonpregnant ewes.  |  Levine, MG., et al. 1984. Am J Obstet Gynecol. 148: 735-8. PMID: 6702941
  12. Biological responses and histological studies of estriol and estriol sulfate in fetal and newborn uteri of guinea pig.  |  Pasqualini, JR. and Nguyen, BL. 1984. J Steroid Biochem. 20: 1047-55. PMID: 6727350
  13. Homogeneous enzyme immunoassay of estriol in picogram amounts.  |  Ghosh, M., et al. 1983. Clin Chim Acta. 128: 223-31. PMID: 6851138
  14. Two-hour Sephadex column method for assay of unconjugated estriol in serum.  |  Haigh, WG., et al. 1980. Clin Chem. 26: 309-12. PMID: 7353284
  15. Oestrogen in human pregnancy faeces.  |  Adlercreutz, H. and Martin, F. 1976. Acta Endocrinol (Copenh). 83: 410-9. PMID: 989669

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Estriol, 100 mg

sc-205682
100 mg
$21.00

Estriol, 500 mg

sc-205682A
500 mg
$65.00