Letrozole / Femara Local Anesthetic Powder TROZET CAS Number 112809-51-5

Alias: Femara , Letrozoles ,TROZET
Dosage: LETROZOLES TABLETS USP 2.5MG
Assay: 98.0-102.0%. USP32
CAS: 112809-51-5
Usage: Anti estrogen
Appearance: White crystalline powder.
Active life cycle : 6 hours
MW: 285.3
MP: 181-183 degrees

Letrozole, 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 letrozole off-label in fertility treatments to help encourage egg release (ovulation) in women.

Letrozole 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.

This treatment has proven beneficial in cancers whose growth seems to be encouraged by excess estrogen in the body, like certain types of breast cancer.

Letrozole is used for:

Use in Cancer
Letrozole is approved to be used alone or with other drugs to treat:

Breast cancer in postmenopausal women who have any of the following types of breast cancer--
Early-stage, hormone receptor positive (HR+) breast cancer in women who have already received other treatment.
Early-stage breast cancer that has been treated with tamoxifen citrate for at least five years.
Breast cancer that is locally advanced or has metastasized (spread to other parts of the body), is HER2 positive (HER2+) and HR+.
Breast cancer that is locally advanced or has metastasized and it is not known whether the cancer is HR+ or hormone receptor negative (HR-).
Advanced breast cancer that has gotten worse after antiestrogen therapy.
Letrozole is also being studied in the treatment of other types of cancer.

Major Side Effects
You should check with your doctor immediately if any of these side effects occur when taking letrozole:

Less common:
Bone fracture
breast pain
chest pain
chills, fever, or flu-like symptoms
mental depression
shortness of breath
swelling of the feet or lower legs