Synonyms

1,3,5-estratriene-3,17beta-diol; 17beta-estradiol; 3,17beta-dihydroxy-1,3,5(10)-estratriene; dihydrofolliculin

CAS No.

50-28-2

Molecular formula

C₁₈H₂₄O₂

Molecular weight

272.38

Structural formula

Standard

USP29

Appearance

White or practically white,

Odorless powder

Melting point

173-179℃

Specific rotation

+76°to +83°

water

3.5%max.

Chromatographic purity

the sum of impurities 1.0%max.
particularltyimpuriti 0.5%max.

Residual Solvents

Ethanol0.5%max

Assay

97.0%-103.0%