Female Hormone Estrogen White Crystalline Powder Estriol
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Name: Estriol
Synonyms: 50-27-1, steroid powder, Estriol
CAS No.: 50-27-1
Formula: C18H24O3
Molecular Weight: 288.39
EINECS: 200-022-2
Purity: 99%
Appearance: White crystalline powder
Application: Pharmaceutical active ingredient

Description:
Estriol is a natural estrogen which is associated with pregnancy. In pregnant women, estriol is produced in the fetus by the fetal liver and in the placenta. Levels of estriol in the blood and urine can be used to determine whether or not a woman is pregnant, and to monitor the progress of the pregnancy. Abnormal estriol levels can indicate that there is a problem with the developing fetus which could bear closer monitoring or additional testing. The quad screen routinely recommended to pregnant women includes a check on estriol levels.

Estriol levels are typically highest in women of childbearing age, and they increase during pregnancy. Otherwise, estriol levels in women and men are fairly similar, unless estriol is being taken as a supplement. This hormone is sometimes used to manage the symptoms of menopause, and it has been used in the treatment of some other conditions as well. Levels of estriol in women taking supplements can be very high.

Applications:
Estriol should be considered as an effective and safe form of HRT because it prevents menopausal symptoms like hot flashes without causing side effects so common to conventional estrogen replacement therapy.

Estriol offers a nontoxic, physiologic antagonist for ovarian estrogens, inducing little or no endometrial proliferation in postmenopausal women, which together with progesterone might simulate the protective effect of pregnancy upon subsequent breast cancer risk.