Formestane Anti Estronge Raw Powder

Formestane (Lentaron) is a type I, steroidal aromatase inhibitor. It is used in the treatment of estrogen-receptor positive breast cancer in post-menopausal women. It is available as an intramuscular depot injection.

Product Details

Anti Estrogen Steroid Formestane CAS 566-48-3 Aromatizing Steroid

Formestane Quick Details

Product NameFormestane
PHYSICAL STATEwhite powder
UsageKeep in a ventilated, dry and cool place
StorageAn aromatase inhibitor,
Package methodsfoil bag or drum or as your mind
After-sales serviceWarm after-sale service for you 24/7. Any of your question would be solved for the first as soon as possible.
Shipping methodFedEx,UPS,DHL,EMS, Fedex and so on, by air or sea.Will choose the best shipping way.
Delivery timedelivery quickly at the day when receive the payment, will be deliveried in 4-7days after tracking
Payment MethodsWestern union, money gram, bitcoin and bank transfer

Formestane Descrption

Formestane was developed for use in treatment of estrogen-receptor-positive breast cancer in post-menopausal women. For medical purposes, it is made in intramuscular depot form and injected. It is not used in oral form due to poor bioavailability, which makes the oral version inferior to aromasin, , and arimidex.

Formestane was the first selective, type I, steroidal aromatase inhibitor used in the treatment of estrogen-receptor positive breast cancer in post-menopausal women. Formestane suppresses estrogen production from anabolic steroids or prohormones.

Formestane Application

Formestane Is the second generation of irreversible steroid aromatase inhibitors. It inhibits the aromatase responsible for converting androgen into estrogen, thereby preventing estrogen production. 

Formestane is often used to suppress estrogen production from anabolic steroids or prohormones. It also acts as a prohormone to 4-hydroxytestosteron, an active steroid which displays weak androgenic activity in addition to acting as a mild aromatase inhibitor.

Formestane is dedicated to the treatment of postmenopausal women. Unlike premenopausal women who produce the most estrogen in the ovaries, postmenopausal women produce most estrogens in peripheral tissues with the help of aromatases. 

Formestane is more selective than amino isoflavones, and its activity is amino-hydroxyethylamine 100 to 1000 times, does not inhibit the synthesis of adrenal hormones, without the need to add cortisone and so on. The in vitro inhibition of the product's aromatase is 60 times stronger than that of aminosuccinimide.

When Formestane is used alone, when it is combined with goserelin (gonadotropin-releasing hormone agonist), the drug does not significantly reduce premenopausal estrogen levels in women's blood, and estrogen inhibition in premenopausal women The effect is greater than that of goserelin alone using methanesulfonic acid with other aromatase inhibitors without cross resistance, which does not have side effects of aminoglucan.

Formestane Dosage

Formestane has a very long active life on the order of 24-36 hours. Lentaron is available as an intramuscular depot injection, and is often found in 2 ml ampules of 125 mg/ml solution. The recommended dosage for bodybuilder purposes is the same as that for advanced breast cancer therapy, namely 250 mg per week. Formestane can also be found, and taken in the same 250 mg per week dosage in its oral form, but the oral had poor bioavailability is no longer a popular version of this drug.

Formestane COA

Test itemsSpecificationResults
Descriptionwhite crystalline powderwhite powder
Assay(by hplc)98.0~102.0%98.64%
Melting point191~195°c193.5~195.0°c
Loss on drying0.5%max0.19%
Specific rotation+288°~ +298°+290.2°
Residue on ignition0.1%max0.03%
Related substancestotal:1.5%max<1.3%

Residue solvents0.2%max0.10%
Heavy metals20ppm max<10ppm
Conclusionthe specification conform with enterprise standard.

Formestane powder

Our commitment

1. Quality assurance
With 11 years of experience, advanced technology and continuous research, our quality is to fully meet the needs of the market to meet the requirements of customers, many customers use our products, we believe that the product is very good. Whether it is a powder, or liquid, yes, we all know, our liquid better.

2. Safe transportation
Our mode of transport is taken according to each country's situation is different transportation, while our packaging, according to the latest customs situation, constantly updated, improved our packaging, we guarantee that you receive it within 3-5 to your product.

3. The product diversity
Our products are powders and liquids, yes, brothers, the effect of the liquid is very good, but many people do not use liquid, so you are very lucky, you buy our powder, we can tell you the method of making the liquid If you buy a liquid, we will tell you how to filter. We absolutely guarantee that you can very safely use our products

4. High quality service : Our goods packing will not contain any hormone information and can be sent out from different areas of china. At present,the goods customs clearance rate we send to United states and Europe is 99%, As for Canada, Brazil of quite high buckle close rate area, we also have a new way to get through the customs. We also have completely re-send policy to some areas.


Why Choose Us?



Rich experience

We specialize in this field for many years , our steroids and hormones exported to Overseas , to Europe , Africa , Asia , Americas and other country , and we have got very good feedback from our customers , and Established long friendly relations of cooperation .

Great quality , purity and favorable .

Good quality is one of our secret success , welcome order the samples .

Safest and fastest delivery

We have Adequate stock , and can arranged within 24 hours when receive the payment . Tracking number would be informed quickly after shipment .
We have special way could ship 2mg to 100mg products a time . We offer melting powder into liquid service . And ship the liquid in special bottles .

Good after-sales service

Tell the package update asap , and will try best solve when customer encountered various problems !

Everything is for customers

Our products and services will focus on the largest customer demand , We hold the greatest enthusiasm and sincere cooperation with each customer .
All in all , high quality , best service , security shipping and competitive price are our perpetual pursuance .

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