Fomestane CAS 566-48-3 White Lentaron 99% Anabolic Steroids China Factory Direct Supply

Basic Information
Place of Origin: CHINA
Brand Name: TINGYI
Certification: GMP , ISO 9001:2008
Model Number: CAS:566-48-3
Minimum Order Quantity: 10g
Price: Contact Us
Packaging Details: Stealth And Discreet Packaging
Delivery Time: Within 7 Working Days
Payment Terms: Bank Transfer - Bitcoin - Western Union - MoneyGram
Supply Ability: 1kg per day
Appearance: White To Light Yellow Crystalline Powder Other Name: Lentaron
Shipping Method: EMS, HKEMS, FEDEX, DHL, UPS, Aramex, ETC Stroage Temp: 0-6°C
MF: C19H26O3 MW: 302.41
High Light:

anti estrogen products


anti estrogen drugs




Formestane is classified as a selective irreversible steroidal aromatase inhibitor. This agent is


structurally a derivative of androstenedione, differing from this well known prohormone only by the


addition of a 4-hydroxyl group. This group, however, is responsible for causing an irreversible


attachment between formestane and aromatase when the two come into contact with each other.



This means that formestane will bond with the enzyme and never let it go, permanently


deactivating it as a result. The enzyme will need to be replaced, through normal attrition, before


the body will recover its lost estrogen synthesizing capacity. This may take several days or more


following cessation of therapy. Given this mode of action, formestane is also referred to as a


"suicide" aromatase inhibitor, as the drug essentially sacrifices itself in the process of blocking


estrogen conversion. As a class of drugs, aromatase inhibitors are used (off-label) by male


bodybuilders and athletes to prevent the estrogenic side effects of certain anabolic/androgenic


steroids, and to increase fat loss and muscle definition while dieting.



Because of its potent estrogen-suppressing action, formestane has been used clinically to treat


breast cancer patients in a number of countries. It has been shown to be an effective option as a


second line of defense after tamoxifen, an estrogen receptor antagonist, has failed to elicit a


positive response with patients, and produces an overall response statistically similar to


tamoxifen when administered as the first-line therapy. In terms of overall potency, formestane is


not as strong as the selective third generation inhibitors like Arimidex (anastrozole) or Femara


(letrozole). One study, for example, notes a 79% level of suppression of estrogen levels with 4


weeks use of Arimidex 1 mg daily (on par with levels noted with Femara use), but only a 58%


level of suppression with intramuscular formestane injections (250 mg every two weeks). But next


to estrogen receptor antagonists like Clomid (clomiphene citrate) and Nolvadex (tamoxifen


citrate), formestane is significantly more effective at blocking the effects of estrogen in the body.


Fomestane CAS 566-48-3  White Lentaron 99% Anabolic Steroids China Factory Direct Supply 0



Formestane is used in the treatment of estrogen-receptor positive breast cancer in post-


menopausal women. It is available as an intramuscular depot injection.

Formestane is often used to suppress estrogen production from anabolic steroids or


prohormones. It also acts as a prohormone to 4-hydroxytestosterone, an active steroid which


displays weak androgenic activity in addition to acting as a mild aromatase inhibitor.

Formestane has poor oral bioavailability and as such is no longer popular as many orally


active aromatase inhibitors have been identified.



The most common version of formestane sold was in a topical gel form and it was dosed at


100 - 200mgs per application. Users would apply it onto clean, dry skin and rub in thoroughly;


usually on the thighs or upper arms. It took 1 to 5 minutes to dry.

The injectable version for both breast cancer purposes and bodybuilders is 125mgs twice per


week or 250mgs once per week.


Lab Test Result

Product Name






White Solid


Test Items








By UV, To match with working standard




Related substances


Not more than 0.05%




Heavy metals






Loss on drying






Resiue on ignition






Melting point






Assay (HPLC)








It conforms to EP Standard

Aromatase Inhibitor Formestane Anti Estrogen Medicine Products Anti Cancer


Our Service

1. Quality Product and Good Price
We offer absolute high quality product in customized or non-customized.If there are any problems in quality,please contact me as soon as possible.
2.Fast&Secure Shipping
Generally,for small quantity product,the product will be shipped by courier.For bulk goods,usually you will receive the product within 15 working days.The rate of passing customs is more than 90%.
3.Reshipping Policy
Even for the worst situation when the product is blocked by the customs,we can reship the product without any extra payment for the product.
4.Technical Supports
Our lab can customize the right product and support u with our top specialists.So if u have a recipe and need help just inform us.We can make experiments and get a good result


Competitive Advantage:

1 High quality with competitive price:
1) Standard: Enterprise Standard
2) All Purity≥98%
3) We are manufacturer and can provide high quality products with factory price.
2 Fast and safe delivery:
1) Parcel can be sent out in 24 hours after payment. Tracking number available
2) Secure and discreet shipment. Various transportation methods for your choice.
3) Customs pass rate ≥99%
4) 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.
3 We have clients throughout the world:
1) Professional service and rich experience make customers feel at ease, adequate stock and fast delivery meet their desire.
2) Market feedback and goods feedback will be appreciated, meeting customers' requirement is our responsibility.
3) High quality, competitive price, fast delivery, first-class service gain the trust and praise from the customers.


Frequently Asked Question

Question 1 , How do you pack the order ?

Discreet package , the packing suits you best would be choosen to cross

customs safely

Question 2, What is your shipping method

Shipping by express (FedEx,UPS,DHL,EMS,HKEMS,TNT), and cheapest by airmail

Question 3, if my order seized by custom ,what do you do ?

Resending police if the tracking number do not update online or it sezied by custom

Questions 4, What is your payment accept

Safe and fast payment : Western Union ,Money Gram ,T/T ,Bitcoin

Questions 5, Will you supply tracking number

Yes ,we supply tracking number for following . In general ,once we supply the tracking number to you ,you can track the parcel information within 1-2 business days

Question 6, How many days will it take to my country after I do the payment

In general ,fastest with 3-5 business , slowest 5-7 business days


Related Products

  Tamoxifen Citrate (Nolvadex) CAS: 54965-24-1
  Clomiphene Citrate (Clomid) CAS: 50-41-9
  Toremifene Citrate (Fareston) CAS: 89778-27-8
  Femara CAS: 112809-51-5
  Aromasin CAS: 107868-30-4
  Proviron CAS: 1424-00-6
  Arimidex CAS: 120511-73-1
  Cabergoline (Caber) CAS: 81409-90-7
  Finasteride CAS: 98319-26-7
  Dutasteride CAS: 164656-23-9

Contact Details

Phone Number : +8615827096298

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