Alias: Femara
Pureza: 99%mín.
Número de registro CAS: 112809-51-5
fórmula molecular: C17H11N5
Peso molecular: 285.3
Calificación: Grado farmacéutico
Uso: material 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 (ovulation) 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.
| TEST ITEMS |
ESPECIFICACIÓN
|
RESULTADOS
|
|
Descripción
|
Polvo cristalino blanco
|
Polvo blanco
|
|
Identificación
|
Positivo
|
Positivo
|
|
Ensayo(por HPLC)
|
98.0~102,0%
|
99.58%
|
|
absorbancia(E1cm)
|
465~495
|
486.5
|
|
Punto de fusión
|
191~195ºC
|
192.5~195.0ºC
|
|
Pérdida por secado
|
0.5%máximo
|
0.22%
|
|
Rotación específica
|
+288º~ +298º
|
+295.2ºC
|
|
Residuo en el encendido
|
0.1%máximo
|
0.02%
|
|
Sustancias relacionadas
|
Total:1.5%máximo
|
<1.2%
|
|
|
Soltero:0.5%máximo
|
<0.6%
|
|
Residue Solvents
|
0.2%máximo
|
0.1%
|
|
Metales pesados
|
20ppm máx.
|
<10ppm
|
