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Estriol (Estriol, oestriol, E3) is one of the three main human estrogens. Metabolites of estradiol and estrone. Among estrone, estradiol, and estriol, estriol has the weakest activity. Exist in urine, higher content in urine during pregnancy. There is no significant difference in serum estriol levels between non-pregnant women, postmenopausal women and men.

Product Details:

Name: estriol

Synonyms:

Holin;

Triovex;

OVESTIN;

Estriol;

OE3;

Thulol;

Orestin;

E 3;

Estra-1,3,5(10)-triene-3,16,17-triol, (16α,17β)-;

Gynasan;

THEELOL;

CAS: 50-27-1

EINECS: 200-022-2

MF: C18H24O3

MW: 288.38100

MP: 280-282 °C(lit.)

BP: 469?C at 760 mmHg

FP: 220.8?C

Purity: 95%min

Density: 1.255g/cm3

Refractive index: 58 ° (C=0.4, Dioxane)

Storage Condition: -20?C Freezer

Specific rotation: D25 +58° ±5° (0.04 g in 1 ml dioxane)

Acidity factor (pKa): pKa 10.38±0.02(H2O t=23±2 Iunspeci?ed) (Uncertain)

Soluble: pKa 10.38±0.02(H2O t=23±2 Iunspeci?ed) (Uncertain)

Appearance: White crystalline powder

Stability: Stable at room temperature in closed containers under normal storage and handling conditions.

Package: 5g, 25g, 100g, 500g, 1kg, 25kg

Application: pharmaceutical intermediate

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