|Place of Origin:||China|
|Minimum Order Quantity:||Negotiable|
|Packaging Details:||1kg Sterile Aluminum Foil Bag or Discreet|
|Delivery Time:||Adequate in Stock|
|Payment Terms:||T/T, , Money Gram, Bitcoin ,ect,|
|Assay:||99%||Usage:||Breast Cancer Treatment|
|Molecular Weight:||285.31||Molecular Formula:||C17H11N5|
|Product Name:||Anastrozole||Character:||White To White Crystalline Powder|
anti cancer drugs,
|Appearance||White crystalline powder|
|Melting point||181-183 ºC|
Letrozole is an oral non-steroidal inhibitor for the treatment of hormonally-responsive breast cancer after surgery.
Letrozole prevents the aromatase from producing estrogens by competitive, reversible binding to the heme of its cytochrome p450 unit, the action is specific,and letrozol does not reduce production of mineralo-or corticosteroids.
Letrozole lowers estrogen levels in postmenopausal women, which may slow the growth of certain types of breast tumors that need estrogen to grow in the body.
Letrozole is used to treat breast cancer in postmenopausal women. It is often given to women who have been taking tamoxifen (Nolvadex, Soltamox) for 5 years.
How Letrozole Works
Letrozole lowers the levels of the female sex hormone oestrogen in the body. Oestrogen stimulates some breast cancers to grow. These breast cancers are called hormone sensitive or hormone receptor positive. Letrozole can stop or slow the growth of these cancers. It can also reduce the chance of a breast cancer coming back after surgery.
Letrozole only works in women who have had their menopause. It is a type of drug called an aromatase inhibitor. After the menopause, women don’t produce oestrogen from their ovaries.
But they still produce a small amount by using an enzyme called aromatase which turns other sex hormones called androgens into oestrogen. This change happens mainly in fatty tissue, muscle and the skin. Aromatase inhibitors block aromatase so that it can’t change the androgen into oestrogen.
|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.|
1 , Great quality , purity and favourable .
Good quality is one of our secret success , welcome order the samples , MOQ just 10 grams .
2 , Rich experience .
We specialize in this field for many years , our steroids and hormones exported to Overseas , to Europe, Africa , Asia and Americas and so on other country , and we have got very good feedback from our customers , and had Established long friendly relations of cooperation .
3 , Good after-sales service .
Tell the package update ASAP , and will try best solve when customer encountered various .
4 , Safest and fastest delivery .
We have Adequate stock , and can delivery quickly at the very day when receive the payment .
We have special way could ship 0.01 kilo to 3.5 kilo products a time . We offer melting powder into liquid service . And ship the liquid in special bottles .