RawsGear Manufacturer

Specialize in anabolic steroids, body-building supplements and Steroid Hormone Raw Powder

About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
Home ProductsAnti Estrogen Steroids

Legit Anti-Estrogen Letrozole For Breast Cancer Female Treatment Hormone Powder CAS 112809-51-5

China RawsGear Manufacturer certification
China RawsGear Manufacturer certification
As usual, you are on top of business with professionalism. Thank you for the prompt service. Look fwd to next.

—— Milton Rojas

The quality is sooo stable while order from your guys these years,it is amazing quality ,I will never change my source cos it bring me good feedback!!

—— Alex Clinton

I'm Online Chat Now

Legit Anti-Estrogen Letrozole For Breast Cancer Female Treatment Hormone Powder CAS 112809-51-5

China Legit Anti-Estrogen Letrozole For Breast Cancer Female Treatment Hormone Powder CAS 112809-51-5 supplier
Legit Anti-Estrogen Letrozole For Breast Cancer Female Treatment Hormone Powder CAS 112809-51-5 supplier Legit Anti-Estrogen Letrozole For Breast Cancer Female Treatment Hormone Powder CAS 112809-51-5 supplier

Large Image :  Legit Anti-Estrogen Letrozole For Breast Cancer Female Treatment Hormone Powder CAS 112809-51-5

Product Details:

Place of Origin: China
Brand Name: RAWSGEAR
Certification: HPLC
Model Number: 112809-51-5

Payment & Shipping Terms:

Minimum Order Quantity: 10g
Price: Negotiable
Packaging Details: Aluminum foil sealed packaging
Delivery Time: 3-5 work days
Payment Terms: T/T, Western Union, MoneyGram, Bitcoins
Supply Ability: Mass in stock
Contact Now
Detailed Product Description
Product Name: Letrozole MF: C17H11N5
MW: 285.3 Product Categories:: Anti-cancer; Pharmaceutical And Intermediate Materials;
Type: Active Pharmaceutical Ingredients CAS: 112809-51-5
High Light:

Letrozole Anti Estrogen Supplements


USP 2.5MG Anti Estrogen Supplements


112809 51 5 Active Pharmaceutical Ingredients


Legit Anti-Estrogen Letrozole For Breast Cancer Female Treatment Hormone Powder CAS 112809-51-5



Quick detais:

Product name: Letrozole
Alias:Femara , Letrozole ,TROZET; Letrozole; Femara
Assay: 98.0-102.0%. USP32
CAS: 112809-51-5
Usage: Anti estrogen
Appearance: White crystalline powder.
Active life cycle : 6 hours
MW: 285.3
Usage :pharmaceutical raw materials, the hormone
Assay: 99%
Packaging Details: Foil bag or as requirement


Product name: Letrozole
Other Name Femara, Letrozole, TROZET
Original China
CAS 112809-51-5
Molecular formula C17H11N5
Brand name NJBNSteroid
Drug Class Pharmaceutical material
Delivery time within 24 hours upon receipt of payment
Delivery Fast and secure shipping by EMS, DHL, TNT, FedEx, UPS
Purity 99.2%
Package Discreet and Hidden package according to specific requirement
Appearance White Crystalline Powder
Certification SGS, ISO 9001





Femara (letrozole) is a type II (non-steroidal) third generation aromatase inhibitor. Clinically it is used to treat postmenopausal women with either estrogen receptor positive or estrogen receptor unknown breast cancer.

In women with breast cancer, it has been shown to reduce estrogen levels by 98% or more (1). However, it’s use and benefits are not limited to eliminating estrogen in women.


For pre-contest bodybuilders, Letrozole is almost a necessity to eliminate water retention and achieve the ripped look necessary to compete in today’s bodybuilding world. However, in my experience, it is only necessary to be used for the last 4-6 weeks, to eliminate excess estrogen and water retention. After using Letrozole I recommend staying away from any estrogen suppression for at least a month to try to normalize the body.

Femara se yon inibite Aromatase pwisan ki te devlope pou goumen kanse nan tete. Pou stewoyid ou ak bodybuilders, li se yon dwog itilize pou konbat efe segonde monn fi ou stewoyid dlo-retansyon, akne ak gynocomastia. Li pral ogmante nivo testostewon akoz monn fi ki pi ba nan ko a. Efe segonde soti nan gen ladan yon kondwi seks bese ak itilizasyon kontinyel ka mennen nan bese fonksyon lipid ak yon sistem iminite ki gen pwoblem.





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.


Legit Anti-Estrogen Letrozole For Breast Cancer Female Treatment Hormone Powder CAS 112809-51-5 0




Femara is a new drug developed for the treatment of advanced breast cancer in women. Femara is the second class of a new class of third-generation selective oral aromatase inhibitor.

It acts by blocking the enzyme aromatase, immediately blocking the production of estrogen. Since many forms of breast cancer cells are stimulated by estrogen, it is hoped that by reducing the amount of estrogen in the body the progression of such a disease can stop. This is the basic local behind Nolvadex, except this block the action drug and not the production of estrogen.

The effects of Femara can be quite dramatic to say the least. A daily dose of a single pill (2.5 mg) can produce estrogen suppression greater than 80% of treated patients. With the powerful effect this drug has on hormone levels, it is only to be used (clinically) by post-menopausal women with diseases who have progressed to these treatments with Nolvadex. Side effects such as hot flushes and thinning hair may be present, and there would no doubt be much more severe in pre-menopausal patients.


Letrozole is available in generic form. Common side effects include hot flashes, hair loss, joint / bone / muscle pain, tiredness, unusual sweating, nausea, diarrhea, dizziness, and trouble sleeping.

The recommended dose of Letrozole is one 2.5 mg tablet administered once a day, without regard to meals.


Other drugs may interact with Letrozole. Tell your doctor all prescription and over-the-counter medications and supplements you use. Letrozole must not be used during pregnancy. Letrozole may harm the fetus.


Letrozole is used mainly in women after menopause. If you have recently gone through menopause, discuss birth control with your doctor. Do not use birth control containing estrogen. It is unknown if Letrozole passes into breast milk and may harm a nursing infant. Breast-feeding while using Letrozole is not recommended.




Use in bodybuilding


Letrozole (Femara) is such a powerful artificial intelligence that it can be a great weapon to combat emergencies where estrogen-related parties get out of control. When an anabolic steroid user uses compounds such as testosterone, dianabol, deca durabolin, equipoise etc; they will aromatize in the body and turn into estrogen. This can cause multiple estrogen side effects, such as water retention, which has a domino effect and can affect your libido, sleep, blood pressure, and energy.

Another dangerous estrogen side effect is gynecomastia (bitch breasts), which if left untreated can require expensive and invasive surgery. This is why running an aromatase inhibitor is essential if you are using aromatizing steroids during your cycle.





Letrozole (Femara) FDA approved

1) adjuvant therapy of postmenopausal women with hormone receptor positive early breast cancer;
2) Extended adjuvant therapy of early breast cancer in postmenopausal women receiving 5 years of adjuvant tamoxifen therapy;
3) unknown first-line therapy for hormone receptor-positive or hormone-receptor locally advanced or metastatic breast cancer in postmenopausal women;
4) treatment of advanced breast cancer in postmenopausal women with disease progression following anti-estrogen therapy.
The recommended dose of letrozole is one 2.5 mg tablet administered once daily without regard to meals. When used (off-label) to reduce the estrogenic side effects of anabolic/androgenic steroid use or increase muscle definition, male athletes and bodybuilders typically take 1.25mg to 2.5mg per day. In some cases, half of a tablet (1.25 mg) taken daily is sufficient to prevent the occurrence of estrogenic side effects.



Effects of Letrozole:

Letrozole is a powerful aromatase inhibitor that has been developed to fight breast cancer. For athletes and bodybuilders, it is a drug used to combat the estrogenic side effects of water-retaining anabolic steroids, acne and gynocomastia. It will also increase testosterone levels because of the lowered estrogen in the body. Side effects of Letrozole include a lowered sex drive and continued use can lead to lowered lipid function and a impaired immune system.


Letrozole ( Femara ) side effects


dizziness, drowsiness, weakness, feeling tired;
hot flashes, warmth in your face or chest;
bone pain, muscle or joint pain;
flushing (warmth, redness, or light feeling);
increased sweating;
swelling, weight gain

Legit Anti-Estrogen Letrozole For Breast Cancer Female Treatment Hormone Powder CAS 112809-51-5 1


Our Advantages:

1.High quality and standard

Standard: Enterprise Standard;
All Purity≥98%;
We are manufacturer and can provide high quality products with factory price.
2. Fast and safe delivery:

Parcel can be sent out within 24 hours after payment. Tracking number available;
Secure and discreet shipment. Various transportation methods for your choice;
Customs pass rate ≥99%;
We have our own agent/remailer/distributor who can help us ship our products very fast and safe, and we have stock in there for transferring.

Professional service and rich experience make customers feel at ease, adequate stock and fast delivery meet their desire.
Market feedback and goods feedback will be appreciated, meeting customers's requirement is our responsibility.
High quality, competitive price, fast delivery, first-class service gain the trust and praise from the customers.

Contact Details
RawsGear Manufacturer

Contact Person: Gayle Lee

Tel: +8613264734726

Send your inquiry directly to us (0 / 3000)