|Place of Origin:||China|
|Minimum Order Quantity:||Negotiable|
|Packaging Details:||Foil bag or Disguised package|
|Delivery Time:||3-5 days|
|Payment Terms:||T/T, Western Union, MoneyGram|
|Supply Ability:||Mass in Stock|
|Appearance:||White Crystalline Powder||Purity (HPLC):||99%Min|
raw test powder,
raw pharmaceutical materials
White Solid Prohormones Bodybuilding Supplements CAS 57-91-0 17 Alpha Estradiol Estradiol
CAS No: 57-91-0
Molecular Weight: 272.38
Appearence: White crystalline powder
Usage: Weight Loss
17α-estradiol is distinguished from estradiol (17β-estradiol), the predominant sex hormone in females, only by the stereochemistry of the carbon atom 17. In contrast to 17β-estradiol, 17α-estradiol has less or no feminizing estrogen activity depending on its dosage and the tissue it is affecting.Alfatradiol acts as an inhibitor of the enzyme 5α-reductase, which is responsible for the activation of testosterone to dihydrotestosterone, and which plays a role in regulating hair growth.17α-Estradiol has been studied as a therapeutic with potential to treat Alzheimer's and Parkinson's disease and other patients suffering from neurodegenerative diseases.
17α-Estradiol (as the sodium salt of its sulfated form) is a minor component (<10%) of hormone replacement products (such as Premarin), which have been studied and/or marketed in women and men since the 1930s. A survey of the effects of various forms of 17α-estradiol in humans on biochemical parameters, efficacy, estrogenicity, metabolism, safety, and tolerability has been published.
17α-Estradiol is used in form of an ethanolic solution for topical application on the scalp. Similarly to other drugs against alopecia, topical or oral, it has to be applied continuously to prevent further hair loss.Regrowth of hair that was already lost is only possible to a limited extent. In general, advanced alopecia does not respond well to medical treatment, which is thought to be a consequence of the hair roots being lost.
As a sex hormone, it also triggers many of the developments of the reproductive system that begin in puberty. It is present throughout the reproductive years, and declines during and after menopause. This decline is precisely what causes many of the symptoms of menopause, such as hot flashes and night sweats, vaginal dryness, and the loss of bone mass that may lead to osteoporosis.
Estradiol (known as a-Estradiol or 17 a-Estradiol) is a biologically active estrogen in human breast cancer cells in tissue culture. 17-Estradiol 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.
|Testosterone Acetate||Trenbolone Acetate||T-A001 MGF 2mg|
|Testosterone Cypionate||Trenbolone Enanthate||T-A002 PEG MGF 2mg|
|Testosterone Decanoate||Boldenone Acetate||T-A003 CJC-1295 with DAC 2mg|
|Testosterone Enanthate||Boldenone undecylenate||T-A004 CJC-1295withoutDAC 2mg|
|Testosterone Isocaproate||Boldenone Cypionate||T-A005 PT-141 10mg|
|Testosterone Phenylpropionate||Boldenone Propionate||T-A006 MT-1 10mg|
|Testosterone Propionate||Nandrolone Decanoate||T-A007 MT-2 10mg|
|Testosterone Undecanoate||Nandrolone phenylpropionate||T-A008 GHRP-2 5mg|
|Mesterone||Nandrolone undecylate||T-A009 GHRP-6 5mg|
|Testosterone Sustanon 250||Nandrolone cypionate||T-A009 GHRP-6 10mg|
|Clostebol Acetate||Nandrolone propionate||T-A010 Ipamorelin 2mg|
|Methylandrostanolone||Methyltrienolone||T-A011 Hexarelin 2mg|
|Methenolone Enanthate||Drostanolone Propionate||T-A012 Sermorelin 2mg|
|Methenolone Acetate||Drostanolone Enanthate||T-A013 Oxytocin 2mg|
|Anadrol||Stanolone||T-A014 TB500 2mg|
|Anavar||Tadalafil||T-A015 pentadecapeptide BPC 157 2mg|
|Winstrol||Vardenafil||T-A016 GH 176-191 2mg|
|Clomifene citrate||Dianabol||T-A017 Triptorelin 2mg|
|Toremifene citrate||Tamoxifen Citrate||T-A018 Tesamorelin 2mg|
|Finasteride||hydrochloride||T-A020 Gonadorelin 2mg|
|T-A022 Selank 5mg||T-A021 DSIP 2mg||T-A020 Gonadorelin 10mg
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