17a-Estradiol Details
Estradiol Synonyms: 1,3,5-estratriene-3,17-alpha-diol;1,3,5-Estratriene-3,17alpha-diol;17alpha-Oestradiol;3,17alpha-Dihydroxyestra-1,3,5(10)-triene;3,17-alpha-dihydroxyoestra-1,3,5(10)-triene;3,17alpha-Dihydroxyoestra-1,3,5(10)-triene;5(10)-triene-3,17-diol,(17-alpha)-estra-3;epiestradial
Estradiol CAS: 57-91-0
Estradiol MF: C18H24O2
Estradiol MW: 272.38
Estradiol EINECS: 200-023-8
Product Categories: Steroids;Intermediates & Fine Chemicals;Pharmaceuticals
Estradiol (called α - estradiol or 17α - estradiol) for human breast cancer cells in tissue culture biologically active estrogen. Not part of the 17- and selective estrogen receptor (ER-X) traditional hormone / receptor of the endocrine system, but an important autocrine / paracrine function of the system is part of the growth in the adult brain. In menopause, and neurodegenerative diseases (eg Alzheimer's disease and ischemic stroke) treatment, 17- estradiol may have important implications for hormone replacement therapy thing.
The development of secondary sex characteristics in women is driven by estrogens, to be specific, estradiol. These changes are initiated at the time of puberty, most are enhanced during the reproductive years, and become less pronounced with declining estradiol support after the menopause. Thus, estradiol enhances breast development, and is responsible for changes in the body shape, affecting bones, joints and fat deposition. Fat structure and skin composition are modified by estradiol.
Estradiol (known as α-Estradiol or 17 α-Estradiol) is a biologically active estrogen in human breast cancer cells in tissue culture. 17-Εstradiol and its selective receptor, ER-X, are not part of a classical hormone/receptor endocrine system but of a system with important autocrine/paracrine functions in the developing and adult brain.
17-Estradiol may have enormous implications for hormone replacement strategies at the menopause and in the treatment of such neurodegenerative disorders as Alzheimer's disease and ischemic stroke.
Product name |
Estradiol |
Appearance |
White crystalline powder |
Characteristics |
White or creamy white, crystalline powder |
conform |
Melting point |
176-180 °C |
178~ 179°C |
Water |
≤3.5% |
pass |
Assay |
97 .0~ 103.0% |
99.3% |
Loss on drying |
≤0.5% |
0.1% |
Related substances |
total impurities ≤1.0% |
Pass |
any individual impurity ≤0.5% |
Pass |
Residual solvents |
ethanol ≤0.5% |
Pass |