Anti Estrogen Steroids Powder Estradiol CAS 50-28-2 for Female Sex
Appearance & Physical State
white to off-white crystalline powder
Stable. Incompatible with strong oxidizing agents.
Estradiol is a sex hormone that is present in both males and
females, and is the most important form of estrogen in humans. In
women, it plays a key role in the development and functioning of
the reproductive system, as well as in the growth of certain bones.
It also governs the distribution of body fat in women and is the
main hormone responsible for the fact that women are shorter than
men, on average. Both the ovaries and the adrenal glands produce
The menstrual cycle in women involves predictable variations in the
levels of several hormones, with estradiol being one of them. It is
involved in the ovulation process and prepares the inner lining of
the uterus for implantation, should the egg be fertilized. Certain
tests done on baboons and other primates have indicated that his
hormone also plays a continual role in maintaining a pregnancy,
helping it to last for the full gestation period.
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.
|Appearance||White crystalline powder|
|Characteristics||White or creamy white, crystalline powder||conform|
|Melting point||173 ~ 179°C||178~ 179°C|
|Assay||97 .0~ 103.0%||99.07%|
|Loss on drying||≤0.5%||0.21%|
|Related substances||total impurities ≤1.0%||Pass|
|any individual impurity ≤0.5%||Pass|
|Residual solvents||ethanol ≤0.5%||Pass|
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
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.
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