エイリアス: Femara
純度: 99%分
CAS 登録番号: 112809-51-5
分子式: C17H11N5
分子量: 285.3
学年: 医薬品グレード
使用法: 医薬品原料
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 |
仕様
|
結果
|
|
説明
|
白色の結晶性粉末
|
白い粉
|
|
識別
|
ポジティブ
|
ポジティブ
|
|
アッセイ(HPLCによる)
|
98.0～102.0%
|
99.58%
|
|
吸光度(E1cm)
|
465~495
|
486.5
|
|
融点
|
191~195ºC
|
192.5~195.0ºC
|
|
乾燥減量
|
0.5%最大
|
0.22%
|
|
特定の回転
|
+288º~ +298º
|
+295.2℃
|
|
強熱時の残留物
|
0.1%最大
|
0.02%
|
|
関連物質
|
合計:1.5%最大
|
<1.2%
|
|
|
シングル:0.5%最大
|
<0.6%
|
|
残留溶剤
|
0.2%最大
|
0.1%
|
|
重金属
|
20最大PPm
|
<10PPm
|
