Anti Estrogen Steroids 99.3% Letrozole Estrogen Blocker Steroids
For Bodybuilding CAS 112809-51-5
CAS No: 112809-51-5
Molecular formula: C17H11N5
Molecular weight: 285.3
Appearance: White power
Assay: 99 percent
Delivery time: 5-7working days door to door
Minimum order: 1g
Supply ability: 100kg/month
Quality standard: USP32
Femara is a type of hormone therapy drug used to treat breast
cancer in women who have had their menopause. It is also called
Letrozol potently inhibits aromatase derived from a variety of
different sources including human placental microsomes, particulate
fractions of human breast cancer, rat ovarian microsomes, MCF-7
cells transfected with aromatase (MCF-7Ca), JEG-3 human
choriocarcinoma cells , CHO cells and hamster ovarian tissue.
Letrozol is in a class of medications called nonsteroidal aromatase
inhibitors. It works by decreasing the amount of estrogen produced
by the body. This can slow or stop the growth of some types of
breast cancer cells that need estrogen to grow.
What is Femara (Femara)?
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Femara, sold under the brand name Femara, is a prescription drug
used to treat breast cancer in its advanced stages, and in women
who have finished menopause.
Doctors may use Femara off-label in fertility treatments to help
encourage egg release (ovulation) in women.
Femara belongs to a class of cancer drugs known as aromatase
inhibitors, which work by preventing the body from converting a
hormone called androgen into estrogen.
This treatment has proven beneficial in cancers whose growth seems
to be encouraged by excess estrogen in the body, like certain types
of breast cancer.
Originally manufactured by Novartis, the Food and Drug
Administration (FDA) first approved Femara in 1997.
Letrozol is used treat early breast cancer in women who have
experienced menopause and who have had other treatments, such as
radiation or surgery to remove the tumor. It is also used to treat
early breast cancer in women who have experienced menopause and who
have already been treated with a medication called tamoxifen
(Nolvadex) for 5 years.
Letrozol is also used in women who have experienced menopause as a
first treatment of breast cancer that has spread within the breast
or to other areas of the body or in women whose breast cancer has
worsened while they were taking tamoxifen.
|Appearance||White or off-white crystaline powder||White Crystalline powder|
|Solubility||Soluble in Chloroform;|
Soluble in ethanol when heated
|ldentification||(1)Maximum absorption in|
wavelength of 240 nm Minimum
absorption in wavelength of 215 nm
|(2)Infrared spectrum should|
be in accordance the
dominant peak of contrast
|In accordance with the|
dominant peak of contrast
|Loss on drying||≤1.0%||0.8%|
|Conclusion||Conforms Specifications of Enterprise Standard.|
Packaging & Delivery :
We have sufficient stock, so we can delivery promptly at the very
day when receive the payment.We have sophisticated and professional
logistic agent. We take responsibility to provide our customers
with fast delivery and secure shipping.Well-trained and disciplined
packing team. Unique ways to ship 10 grams to 100kg powders at one
time to your destination. Fast and discreet shipment could be
arranged for customs pass Guaranteed.
Packing pictures and tacking code are provided within 12 hours
after receiving the payment. Updated tracking information will be
provided every other day. Any questions or problems after receiving
the product, Please feel free to contact us. Problems would be
solved for you immediately.
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