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Breast Cancer Female 112809-51-5 Anti Estrogen Steroids

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China Shenzhen RuiJin Pharmaceutical Co.,Ltd certification
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Breast Cancer Female 112809-51-5 Anti Estrogen Steroids

Breast Cancer Female 112809-51-5 Anti Estrogen Steroids
Breast Cancer Female 112809-51-5 Anti Estrogen Steroids Breast Cancer Female 112809-51-5 Anti Estrogen Steroids

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Product Details:
Place of Origin: China
Brand Name: RuiiJin
Certification: ISO9001
Model Number: 112809-51-5
Payment & Shipping Terms:
Minimum Order Quantity: 10g
Price: Negotiable
Packaging Details: Disguised package or according to your requirement
Delivery Time: Within 24hours after payment
Payment Terms: Western union and moneygram,Bank transfer,Bitcoin, T/T
Supply Ability: 3000t/month
Detailed Product Description
Product name: Letrozole Other Name: Femara
CAS register number: 112809-51-5 Molecular formula: C17H11N5
Molecular weight: 285.3 Appearance: White Powder
Usage: Used As API In Treatment Of Breast Disease. Email:
High Light:



Letrozole Powder

Female Anti Estrogen Steroids Letrozole 112809-51-5 Powder For Breast Cancer


Quick Detail:



  • CAS : 112809-51-5

  • Synonyms:FEMARA;CGS-20267;LETROZOL;LETROZOLE;LetrozoleUsp28;Letrozole99%;CGS-20267, Femara

  • Purity:99%

  • Appearance:White or light yellow crystal

  • Molecular Formula: C17H11N5

  • Molecular Weight: 285.31

  • Anti Estrogen Bodybuilding Steroids Letrozole Femara White Powder CAS 112809-51-5


  • Usage: Used as API in Treatment of breast disease.

  • Recommended dose of Femara is one 2.5 mg tablet administered once a day, without regard to meals.

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.


How to Store?
Out of reach of children
Keep it in the container tightly closed
Store it at room temperature and away from excess heat and moisture
Throw away any medication that is outdated or no longer needed


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.


Letrozole only works in women who have had their menopause.


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. Letrozole is a type of drug called an aromatase inhibitor. It blocks aromatase so that it can't change androgens into oestrogen.






200ml @ 5 mg/ml

1 gram of Letrozole powder

1 beaker suitable for holding the volume of liquids

19.9 ml of PEG 300

179.1 ml of 190 Proof Grain Alcohol




Anti-Estrogens Series Product :


Anti-estrogen Series

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Toremifene Citrate

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CAS No.: 107868-30-4


CAS No.: 120511-73-1


CAS No.: 112809-51-5


CAS No.: 129453-61-8



Femara (Letrozole) Side effects :


Common Side Effects:

Bone And Joint Pain




Higher Cholesterol

Hot Flashes

Weight Gain





Other Side Effects:

Swelling Of Hands, Feet, Ankles, Or Lower Legs

Loss Of Appetite



Difficulty Sleeping

Vaginal Bleeding

Breast Pain



Dry Skin






Letrozole Femara
Tests Specifications Results
Appearance White or off-white crystaline powder


Crystalline powder



Soluble in Chloroform;

Soluble in ethanol when heated


(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
Melting points 182℃-184℃ 182℃
Related substances ≤0.5% 0.3%
Single impurity ≤0.3% 0.2%
Loss on drying ≤1.0% 0.8%


(On anhydrous basis)

≥98.0% 99.2%
Conclusion Conforms Specifications of Enterprise Standard.

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Shenzhen RuiJin Pharmaceutical Co.,Ltd

Contact Person: Gavin Lee

Tel: +8618806592208

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