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Femara Letrozole Steroid Estrogen Blockers Hormone Drugs CAS 112809-51-5

Good quality Bodybuilding Anabolic Steroids for sales
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Femara Letrozole Steroid Estrogen Blockers Hormone Drugs CAS 112809-51-5

China Femara Letrozole Steroid Estrogen Blockers Hormone Drugs CAS 112809-51-5 supplier

Large Image :  Femara Letrozole Steroid Estrogen Blockers Hormone Drugs CAS 112809-51-5

Product Details:

Place of Origin: China
Brand Name: Anti Estrogen Steroids
Certification: GMP, ISO, KOSHER
Model Number: CAS No: 112809-51-5

Payment & Shipping Terms:

Minimum Order Quantity: Negotiation
Price: Negotiation
Packaging Details: according your quantity to choice different package
Delivery Time: send the package within 24 hours after payment
Payment Terms: Western Union, MoneyGram, T/T, Bitcoin
Supply Ability: 200kg/week
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Detailed Product Description
Other Name: Letrozole Assay: 99.5%
Molecular Formula: C17H11N5 Molecular Weight: 285.3
Character: White Power Grade Standard: Medicine Grade
Storage: Cool, Ventilated And Dry Place Suitable For: Adult, Bodybuilder
High Light:

Estrogen Blocker Steroids


Low Estrogen Steroids

Femara Letrozole Steroid Estrogen Blockers Hormone Drugs CAS 112809-51-5​



Quick Detail:

CAS No: 112809-51-5
Molecular formula: C17H11N5
Molecular weight: 285.3
Appearance: White power
Assay: 99%
Delivery time:
Minimum order: 100g
Supply ability: 5000kg/month
Quality standard: USP32
Payment: T/T, Western Union and Money Gram
Delivery: Within 24hours After Your Payment




The steroids you inject or ingest do not cause female-like side-effects on their own, the estrogen that your body makes from them is what really does it. Every time you inject some super “frankensteroid” to get huge, chances are the aromatase enzyme in your body will attach to your steroid and turn it into some nasty girly hormone. It is these estrogen-like hormones that will attach to your breast tissue and cause you to grow tits, or cause water retention or impotence. The only way to keep from getting girly side-effects from steroids is to stop the conversion to estrogen at the source, by inhibiting the aromatase enzyme thus keeping it from wreaking havoc on your steroid cycle.


Letrozone (LZ) is a designer transdermal agent containing Formestane, Arimistane, 11-OXO, 7,8 Benzoflavone and I3 Carbonyl. This is a full formula that is extremely effective at inhibiting the aromatase enzyme and making sure you avoid disastrous side-effects during your steroid cycle. Most notable side-effects from estrogen conversion are the dreaded bitch-tits and puffy-faced water retention.


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.



1. Letrozole is a powerful Aromatase Inhibitor that was developed to fight breast cancer.
2. For athletes and bodybuilders, it is a drug used to combat the estrogenic side effects of anabolic steroids water-retention, acne and gynocomastia.
3. It will also raise testosterone levels because of the lowered estrogen in the body.
4. Femara(generic name is letrozole) is a new drug developed for the treatment of advanced breast cancer in women.
5. Femara is the second in a new class of third-generation selective oral aromatase inhibitors.
6. It acts by blocking the enzyme aromatase, subsequently blocking the production of estrogen.




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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