Hongkong Pengfei Pharmaceutical  Technology  Co.,Ltd
Hongkong Pengfei Pharmaceutical  Technology  Co.,Ltd
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Home>Products>Anti Estrogen Steroids>112809-51-5 Anti Estrogen Steroids Cancer Treatment Letrozole / Femara

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  • 112809-51-5 Anti Estrogen Steroids Cancer Treatment Letrozole / Femara
  • 112809-51-5 Anti Estrogen Steroids Cancer Treatment Letrozole / Femara

112809-51-5 Anti Estrogen Steroids Cancer Treatment Letrozole / Femara

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  • Hongkong Pengfei Pharmaceutical  Technology  Co.,Ltd2020-07-10 09:46:19
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Product Details

Name: Letrozole Other name: Femara Usage: treating breast cancer,bodybuilding
Assay: 99% standard: usp,bp,ep

Product Description

112809-51-5 Anti Estrogen Steroids Cancer Treatment Letrozole / Femara

 

 

Basic information

 

Letrozole

Synonyms: Femara; Letrozol

No.: 112809-51-5

M.F.: C17H11N5

M.W.: 285.3

Assay: 99%

Melting Point: 181-183℃

Appearance: White or white crystalline powder

 

COA:

Tests Specifications Results
Appearance White or off-white crystaline powder White Crystalline powder
Solubility Soluble in Chloroform;
Soluble in ethanol when heated
Conform
ldentification (1)Maximum absorption in wavelength of 240 nm
Minimum absorption in wavelength of 215 nm
Conform
Conform

(2)Infrared spectrum should be in accordance the

dominant peak of contrast

In accordance with the

dominant peak of contrast

Melting points 182℃-184℃ 182℃
Related substances ≤0.5% 0.3%
Single impurity ≤0.3% 0.2%
Loss on drying ≤1.0% 0.8%
[Assay]C17H11N5
(On anhydrous basis)
≥98.0% 99.2%
Conclusion The specifications conform with enterprise standard.

 

Usage:

Letrozole is a hormonal therapy drug. It is used to treat   breast cancer in women who have been through the menopause. It’s best to read this information with our general information about breast cancer or secondary breast cancer.

How letrozole worksBack to top

We also have information about breast cancer in men which explains the hormonal therapies used in men.

Hormones are substances produced naturally in the body. They act as chemical messengers and help control the activity of cells and organs. Hormonal therapies interfere with the way hormones are made or how they work in the body.

Many breast cancers rely on the hormone oestrogen to grow. This type of breast cancer is called oestrogen receptor-positive (ER positive) breast cancer.

After the menopause, oestrogen is no longer made in the ovaries. Instead it’s made in the fatty tissues of the body. This happens when an enzyme called aromatase changes other hormones into oestrogen. Letrozole is a drug called an aromatase inhibitor. It blocks this process and reduces the amount of oestrogen in the body.

 

 

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Injections can be made for you professionally.

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