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|Molecular Formula::||C14H12O2||Molecular Weight::||302.4126|
|Purity::||99%||Appearance: Trans:||Colorless To Pale Yellow Transparent Liquid|
|Grade ::||Pharmaceutical Grade|
CAS 566-48-3 Formestane
Product Name: Formestane
CAS register number: 566-48-3
Molecular formula: C19H26O3
Melting point: 199-202°C
Appearance: white or light green crystalloid
Formestane (lentaron, chemical name: 4-hydroxyandrostenedione) is a type I steroidal aromatase inhibitor (AI). It 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, letrozole, and arimidex.
According to studies, formestane can lower SHBG up to 34%, which will increase free testosterone levels. SHBG (sex hormone binding globulin) is a protein that binds to sex steroids, and renders them inactive, for as long as SHBG is bound to them. There is a difference between ‘free’ testosterone, and ‘bound’ testosterone. Free testosterone is what matters, so lowering SHBG will increase ‘free’ testosterone. Higher testosterone means more strength, muscle mass, less body fat, better sense of well being, and libido.
Many anabolic steroids aromatize in the body into estrogen. The most common are deca durabolin, equipoise, testosterone, and dbol. If an AI is not used, estrogen will increase and potentially cause major problems with estrogenic side effects. The most common side effects of estrogen are gynecomastia (bitch tits), excessive water retention (moon face), high blood pressure (hypertension), and insomnia.