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Related to Estriol: estradiol, estrone


C18H24O3 A crystalline estrogenic hormone obtained from human pregnancy urine.



C18H24O3, a female sex hormone of the estrogen group with the chemical formula

Estriol occurs as colorless crystals with a melting point of 280°C. It is readily soluble in organic solvents. Optically active, it has a specific rotation of [α]D = +61°. Estriol was first isolated in 1934 from the urine of pregnant women. The hormone is ten to 15 times weaker in its physiological activity than estrone, from which it may be easily obtained semisynthetically.

In humans, dogs, and rats, estriol is one of the end products of the metabolism of estrogen. Estriol has also been discovered in the fruits and flowers of certain plants, including the willow, milkweed, and wheat. Seasonal changes or unusual local conditions sometimes cause an increase in the amount of the hormone contained in forage grasses. As a result, cattle may suffer from certain diseases or may produce less milk, since estriol inhibits lactation. Estriol has important physiological functions (see).

References in periodicals archive ?
Based on findings from these tests, a more precise dose of estriol, estradiol, progesterone, and sometimes testosterone can be prescribed.
Accuracy of salivary estriol testing compared to traditional risk factor assessment in predicting preterm birth.
Maternal serum [alpha]-fetoprotein, [beta]-human chorionic gonadotropin, and unconjugated estriol levels in midtrimester trisomy 18 pregnancies.
It is 12 times stronger than estrone and 80 times stronger than estriol.
Resolution 342 is being backed by notable members of the Congress and is calling on the FDA to lift the restriction on prescriptions containing estriol and protect Americans' access to compounded bioidentical hormone therapies.
Salivary estriol as a risk assessment for preterm labor: a prospective trial.
We have an exceptional product, the SalEst salivary estriol system, now on the market and available for pregnant women," said James A.
1-3) However, having weaker estrogenic effects does not mean that estriol has none of the benefits that come with more potent estrogens.
5 mg,Tab Nitrofurantoin Mr,Tab Mefenamic Acid And Dicyclomine Hydrochloride, Estriol cream oint,Tab Desogestrel(0.
Please discuss with your gynecologist the possibility of topical Estriol cream.
MG: There are three main types of estrogen: estradiol, which [is the most abundant]; estrone, which is the most potent, and estriol.
When you replace estrogen in a patient with breast cancer you should use only Estriol (bio-identical) which has never been implicated in cancer of the breast not Estradiol or Estrone (which have been implicated).