Androstenedione 4-Ad Androgenic Anabolic Steroids for Male Andros
|FOB Price:||US $1-5 / grams|
|Min. Order:||10 grams|
|Min. Order||FOB Price|
|10 grams||US $1-5/ grams|
|Payment Terms:||T/T, Western Union, Paypal, Money Gram|
- Model NO.: 99
- Customized: Non-Customized
- Suitable for: Adult
- Purity: >99%
- CAS: 63-05-8
- M.W.: 286.41
- Transport Package: Foil Bag or Other Packagings
- Origin: China
- Powder: Yes
- Certification: GMP, ISO 9001, USP, BP
- State: Solid
- Reference Standard: USP28
- M.F.: C19h26o2
- Trademark: BETTLI
- Specification: 1kg/bag
- HS Code: 3002100000
|Synonym||Andro; andros; 4-Androstenedione. 17 ketotestosterone; 4-androsten-3,17-dione.|
|Appearance||White crystalline powder|
|Place of Origin||China|
|Certification||ISO9001, ISO14000, KOSHER|
|Ref. Price||USD 0.28/g|
|Delivery Time||1-3 days|
|Payment Terms||T/T, Western union, Money gram|
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.
A chemical derivative of estradiol, ethinyl estradiol with maximum dosage 200 μg, is a major component of hormonal contraceptive devices. Combined forms of hormonal contraception contain ethinyl estradiol and a progestin, which both contribute to the inhibition of GnRH, LH, and FSH, which accounts for the ability of these birth control methods to prevent ovulation and thus prevent pregnancy. Other types of hormonal birth control contain only progestins and no ethinyl estradiol.
Hormone replacement therapy:
If severe side effects of low levels of estradiol in a woman's blood are experienced (commonly at the beginning of menopause or after oophorectomy), hormone replacement therapy may be prescribed. Such therapy is usually combined with a progestin to reduce the risk of endometrial cancer.
Estrogen therapy may be used in treatment of infertility in women when there is a need to develop sperm-friendly cervical mucus or an appropriate uterine lining. This is often prescribed in combination
Estrogen therapy can also be used to treat advanced prostate cancer, as well as to relieve symptoms of breast cancer.
Not all products are available worldwide. Estradiol is also part of conjugated estrogen preparations, such as Premarin, though it is not the major ingredient. (Premarin consists of a large number of estrogen derivatives. As the name indicates, it comes from pregnant mares' urine.
1. Our company is a professional production leading factory in China in pharmaceutical area of many years, our products have exported to Germany, Spain, UK, USA, Australia, Middle East, and so on other country.
2. High quality, best price, first-class service, high successful delivery rate.
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