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Estriol, CAS 50-27-1, EINECS 200-022-2
Estriol, CAS 50-27-1, EINECS 200-022-2

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Also used in anti-aging skin care creams


Synonyms:     1,3,5(10)-Estratriene-3,16a,17b-triol; Estra-1,3,5(10)-triene-3,16alpha,17beta-triol

CAS:        50-27-1

EINECS: 200-022-2

Molecular Formula:       C18H24O3

Molecular Weight: 288.38




White or off white crystalline powder


Infrared absorption spectrophotometry should conform with CRS

Clarity of solution

The solution is clear and free from undissolved solid

Specific rotation

+54o to +62o

Loss on drying

0.5% max

Residue on ignition

0.1% max

Relative materials

Total impurities 2.0% max

Particle size

100% pass 10um




Uses:  Estriol is used to mimic the activity of the naturally occurring female sex hormone oestrogen, and it helps to restore the natural balance of this hormone in the body.

It is a hormone known as oestrogen, sometimes known as hormone replacement therapy (HRT).

Estril is also used in anti-aging skin care creams.

Storage:   Store between 15 to 30oC.

Shelf life: 2 years in unopened container.

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