99.8% Healthy Anti Estrogen Steroids Powder Lentaron For Fitness CAS 566-48-3

99.8% Healthy Anti Estrogen Steroid Formestanes Lentaron for Fitness

Quick Detail:

Product Name: / Lentaron
Synonyms: 4-hydroxy-androst-4-ene-17-dione;4-hydroxy-delta(sub4)-androstenedione;4-HYDROXYANDROST-4-ENE-3,17-DIONE;4-HYDROXYANDROSTENEDIONE;4-HYDROXY-4-ANDROSTENE-3,17-DIONE;4-ANDROSTEN-4-OL-3,17-DIONE;4-OHA;CGP-32349
CAS: 566-48-3
MF: C19H26O3
MW: 302.41
Chemical Properties Needles
Usage An antitumor drug. An aromatase inhibitor
Usage antineoplastic, aromatase inhibitor
 

Detailed information:

Formestane (trade name Lentaron), also known as 4-hydroxyandrost-4-ene-3,17-dione, is a type I, steroidal, selective aromatase inhibitor.[1] 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 androstenedione.

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.

Applications:

Formestane is a steroidal aromatase inhibitor, known as a suicidal inhibitor because it permanently binds to the aromatase enzyme.

Formestane was originally used as an injectable for breast cancer patients, but due to its possible androgenic effects it has largely been replaced by non-steroidial AIs in the medical community. Most of its use is now is limited to the bodybuilding community since it is available as a legal dietary supplement for reducing estrogen and increasing testosterone production.

Although formestane can effectively reduce estrogen through oral consumption, its low oral bioavailability has lead to the development of several transdermal based products (which appear to offer higher efficacy at a lower dose).

Relative to 6-oxo and ATD, Formestane is a more potent aromatase inhibitor, which appears to effectively reduce natural estrogen levels by as much as 50% within several days (while higher doses may further suppress estrogen). Because of formestanes potent ability at reducing estrogen it will tend to reduce HDL levels, while increasing LDL levels, thus harming the cholesterol profile. For this reason, it is recommended to limit cycles of formestane to 8 weeks max.

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