Estriol

Estriol Synonyms: oestriol; 1,3,5(10)-Estratriene-3,16a,17b-triol CAS: 50-27-1 MF: C18H24O3 MW: 288.38 EINECS: 200-022-2 Assay: 97.0%-102.0% Standards:USP Character: White crystalline powder. Usage: A metabolite of Estradiol. An estrogenic metabolite considerably less potent than the hormone Estradiol. pharmaceutical material, Steroid hormone, estrogen.

Packing: foil bag or tin. Delivery: Express courier. Estradiol, or more precisely, 17β-estradiol, is a human sex hormone and steroid, and the primary female sex hormone. It is named for and is important in the regulation of the estrous and menstrual female reproductive cycles.

Estradiol is essential for the development and maintenance of female reproductive tissues but it also has important effects in many other tissues including bone. While estrogen levels in men are lower compared to women, estrogens have essential functions in men as well.

Estradiol is found in most vertebrates as well as many crustaceans, insects, fish, and other animal species. Estradiol or oestradiol (American or British English usages), derives from estra-, Gk. οστρο?

(oistros, literally meaning "verve or inspiration") and -diol, a chemical name and suffix indicating that this form of steroid and sex hormone is a type of alcohol bearing two hydroxyl groups.

Estradiol is produced especially within the follicles of female ovaries, but also in other endocrine (i.e., hormone-producing) and non-endocrine tissues (e.g., including fat, liver, adrenal, breast, and neural tissues). Estradiol is biosynthesized from progesterone (arrived at in two steps from cholesterol, via intermediate pregnenolone).

One principle pathway then converts progesterone to its 17-hydroxy-derivative, and then to androstenedione via sequential cytochrome P450-catalyzed oxidations.Action of aromatase on this dione generates estrone, and action of a dehydrogenase on this gives the title compound, 17β-estradiol.

Ethisterone CAS : 434-03-7 Norethisterone CAS:68-22-4 Ethynyl estradiol CAS:57-63-6 Ethynodiol diacetate CAS:297-76-7 Chlormadinone acetate CAS.: 302-22-7 Cyproterone acetate CAS.: 427-51-0 Megestrol acetate CAS.: 595-33-5 Estradiol CAS:50-28-2 17alpha-Oestradiol CAS: 57-91-0 Estradiol Cypionate CAS:313-06-4 Estradiol enantate CAS: 4956-37-0 Estradiol valerate CAS: 979-32-8 Estradiol Benzoatae CAS:50-50-0 Estrone CAS: 53-16-7 Estriol CAS: 50-27-1 19-Norethindrone acetate CAS:51-98-9 Norethisterone enanthate CAS:3836-23-5 Testolactone CAS:968-93-4 Eplerenone CAS: 107724-20-9 Progesterone CAS:57-83-0 Medroxyprogesterone Acetate CAS: 71-58-9