Formestane Lentaron Powder CAS 566-48-3 Selective Aromatase Inhibitor Formestane Lentaron CAS: 566-48-3
Melting point: 199-202°C
Appearance: white or light green crystalloid
Formestane (trade name Lentaron) is a type I, steroidal, selective aromatase inhibitor. It is used in the treatment of estrogen receptor-positive breast cancer in postmenopausal women. The drug is not active orally, and is instead available only as an intramuscular depot injection. Because of this, it is no longer popular as many orally active aromatase inhibitors have been identified and introduced. Formestane is an analogue of .
Formestane also known as lentaron,is an anti-cancer drug, it is primarily used for the treatment of postmenopausal women with advanced breast cancer, it is also effective in prostate cancer.
Formestane is often used to suppress the production of estrogens 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 weak aromatase inhibitor.
While it is used alone, the drug can not significantly reduce the pre-menopausal estrogen levels in the blood of women,when it is combined with goserelin (gonadotropin-releasing hormone agonist), its inhibitory effect of estrogen in premenopausal women is greater than goserelin used alone. Formestane has no cross-resistance with other aromatase inhibitors , it has no side effects of aminoglutethimide. After oral administration,it is rapidly absorbed by gastrointestinal, its peak plasma concentration time is 1 to 1.5 hours, but the peak concentration of individual is of great difference; after intramuscular injection,it can be accumulated at the injection site and be slowly absorbed. It performs Biphasic elimination process, the initial elimination half-life is 2 to 4 days, the terminal elimination half-life is 5 to 10 days. It is mainly metabolized in the liver after oral administration, in the form of glycosides acid metabolites excreted in the urine.
Price,company and service advantage:
1 Best service, high quality and reasonable price
2. Its customers right to choose the package (EMS, DHL, FedEx, UPS);
3. Its customers right to choose the packing way for his produccts from many recent effective packing ways
4. Specials are possible when clients order is big enough, including the discount policy;
5. Our company promise to deliver clients package to his hands safely, or well cover the total loss and reship your order;
6. Return policy: we promise we will return your money if our product don have effect
1.we have over 10 years experience in this aera
2.we can provide competitive price for every customer and guarantee the quality of our goods.
3.we are attention to every customers requirements and make a good relationship with them.
4.we have a long business relationship with many countries, such as canada, mexico, brazil, united kingdom, russia, germany, india, south africa, malta, egypt, armenia, australia, philippines, belgium, netherlands, denmark ect.
If you have any other questions to consult me.please not hesitate to contact me at any time.
1. why choose us
1. rich experience
we specialize in this filed for many years,our steriods and hormones exported to all over the world and established long friendly relations of coroperation with them.
2. great quality,purity and favorable
good quality is one of our biggest secert to success;u can get the best quality and service from us.
3. safest and fastest delivery
we have adequate stock so that we can deliver the products with 24 hours as soon as receiving the payment.fast and discreet shipment will be arranged to pass customs.
4. good package
unique ways to ship 10g to 100kg powders to your destination.we offer melting powder into liquid service and ship the liquid in special bottles.
5. great after-sales service
any questions or problems after receiving the product,pls feel free to contact us.problems would be solved immediately.
2. order guide
Q1: have your product quality been approved by third party lab
A: yes, all products are strictly tested by our qc, confirmed by qa and approved by third party lab in china, usa, canada, germany, uk, italy, france etc. so you will be assured with good quality if you choose us.
Q2: how do you treat quality complaint
A: first of all, our qc department will do strict examination of our export products by hplc, uv, gc , tlc and so on in order to reduce the quality problem to near zero. if there is a real quality problem ,caused by us, we will send you free goods for replacement or refund your loss.
Q3: is there any discount
A: yes, for larger quantity, we always support with better price.
Q4: how long does it take to the goods arrived
A:it is depending on your location,
for small order, please expect 5-7 days by dhl,ups,tnt, fedex, ems.
for mass order, please allow 5-8 days by air, 20-35 days by sea.
Q5 do you have any reshipment policy
A: we have good after-sale service and re-shipment policy if the parcel lose.
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