Alias: Femara
Purezza: 99%min
Numero di registro CAS: 112809-51-5
Formula molecolare: C17H11N5
Peso molecolare: 285.3
Grado: Grado farmaceutico
Utilizzo: materiale farmaceutico
Femara, sold under the brand name Femara, is a prescription drug used to treat breast cancer in its advanced stages, and in women who have finished menopause. Doctors may use Femara off-label in fertility treatments to help encourage egg release (ovulazione) in women. Femara belongs to a class of cancer drugs known as aromatase inhibitors, which work by preventing the body from converting a hormone called androgen into estrogen.
Letrozole is a type II (non-steroidal) third generation aromatase inhibitor. Clinically it is used to treat postmenopausal women with either estrogen receptor positive or estrogen receptor unknown breast cancer.
For pre-contest bodybuilders, Letrozole is almost a necessity to eliminate water retention and achieve the ripped look necessary to compete in today’s bodybuilding world.
| ELEMENTI DI PROVA |
SPECIFICA
|
RISULTATI
|
|
Descrizione
|
Polvere cristallina bianca
|
Polvere bianca
|
|
Identificazione
|
Positivo
|
Positivo
|
|
Analisi(mediante HPLC)
|
98.0~102,0%
|
99.58%
|
|
Assorbenza(E1cm)
|
465~495
|
486.5
|
|
Punto di fusione
|
191~195ºC
|
192.5~195.0ºC
|
|
Perdita all'essiccazione
|
0.5%massimo
|
0.22%
|
|
Rotazione specifica
|
+288º~ +298º
|
+295.2ºC
|
|
Residuo all'accensione
|
0.1%massimo
|
0.02%
|
|
Sostanze correlate
|
Totale:1.5%massimo
|
<1.2%
|
|
|
Separare:0.5%massimo
|
<0.6%
|
|
Solventi residui
|
0.2%massimo
|
0.1%
|
|
Metalli pesanti
|
20P/min massimo
|
<10P/min
|
