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Alfatradiol, also known as 17α-estradiol and sold under the brand names Avicis, Avixis, Ell-Cranell Alpha, and Pantostin, is a weak estrogen and 5α-reductase inhibitor medication which is used topically in the treatment of pattern hair loss in men and women. It is a stereoisomer of the endogenous steroid hormone and estrogen 17β-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(1,2). 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(3).This compound is a contaminant of emerging concern (CECs). Drinking water contaminant candidate list 3 (CCL 3) compound as per United States Environmental Protection Agency (EPA). Environmental contaminants; Food contaminants.
17alpha-estradiol is an estradiol that is estra-1,3,5(10)-triene substituted by hydroxy groups at positions 3 and 17 (the 17alpha stereoisomer). It is a 17alpha-hydroxy steroid, a 3-hydroxy steroid and an estradiol.
Identification | ||
Name | Epiestradiol | |
Synonyms | 17a-Estradiol; Estra-1,3,5(10)-triene-3,17a-diol | |
Molecular Structure | ||
Molecular Formula | C18H24O2 | |
Molecular Weight | 272.39 | |
CAS Registry Number | 57-91-0 | |
EINECS | 200-354-8 |
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