| Place of Origin: | China |
|---|---|
| Brand Name: | Senwayer Brand |
| Certification: | ISO, 9001, USP |
| Model Number: | 112809-51-5 |
| Minimum Order Quantity: | 10grams |
| Price: | Discount is possible if your order is big enough |
| Packaging Details: | 10g, 20g, 50g , 100g, 500g. 1kg, 10kg |
| Delivery Time: | within 2 working days |
| Payment Terms: | T/T in advance, Money Gram, Western Union, Bank Transfer. |
| Supply Ability: | 1000kg/month |
| CAS: | 112809-51-5 | Usage: | Anti Estrogen Steroids Drugs |
|---|---|---|---|
| Apparence: | Almost White Crystalline Powder | Purity: | 99% |
| Grade: | Pharma Grade | Stock: | Available |
| Deliver Time: | 5 TO 7 Working Days | ||
| High Light: | natural estrogen blocker,estrogen blocker supplement |
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Femara Letrozole Injectable Anti Estrogen Steroids 112809-51-5 White Powder
Quick detail
Senwayer Letrozole
Product Name:Letrozole
Alias: Femara, Lelrozol, TROZET,Letroz,Lelroz, letrozolex
CAS Registry Number:112809-51-5
Purity: 98%
MF: C17H11N5
MW: 285.3
Appearance: White crystalline powder.
Grade:Pharmaceutical Grade
Letrozole Usage:
Primarily treating certain kinds of breast cancer in women past menopause. It may also be used for other conditions as determined by your doctor.
Letrozole is an aromatase inhibitor. It works by reducing the total amount of estrogen produced primarily in the body. This helps to starve cancer cells by depriving them of estrogen.
Do NOT use letrozole if:
you are allergic to any ingredient in letrozole
you have not started menopause
Contact your doctor or health care provider right away if any of these apply to you.
How to use letrozole
Use letrozole as directed by your doctor. Check the label on the medicine for exact dosing instructions.
Ask your health care provider any questions you may have about how to use letrozole.
Standard Dosing Range and Cycle Length :
Effective Dose (Men):.25-.5 mg per day
Effective Dose (Women):2.5 mg/day (medical purposes only)
How letrozole works
Letrozole lowers the levels of the female sex hormone oestrogen in the body. Oestrogen stimulates some breast cancers to grow. These breast cancers are called hormone sensitive or hormone receptor positive. Letrozole can stop or slow the growth of these cancers. It can also reduce the chance of a breast cancer coming back after surgery.
Letrozole only works in women who have had their menopause. It is a type of drug called an aromatase inhibitor. After the menopause, women don’t produce oestrogen from their ovaries. But they still produce a small amount by using an enzyme called aromatase which turns other sex hormones called androgens into oestrogen. This change happens mainly in fatty tissue, muscle and the skin. Aromatase inhibitors block aromatase so that it can’t change the androgen into oestrogen.
Specifications:
| Tests | Specifications | Results |
| Appearance | White or off-white crystaline powder | White Crystalline powder |
| Solubility | Soluble in Chloroform; Soluble in ethanol when heated |
Conform |
| ldentification | (1)Maximum absorption in wavelength of 240 nm Minimum absorption in wavelength of 215 nm |
Conform Conform |
|
(2)Infrared spectrum should be in accordance the dominant peak of contrast |
In accordance with the dominant peak of contrast |
|
| Melting points | 182ºC-184ºC | 182ºC |
| Related substances | ≤0.5% | 0.3% |
| Single impurity | ≤0.3% | 0.2% |
| Loss on drying | ≤1.0% | 0.8% |
| [Assay]C17H11N5 (On anhydrous basis) |
≥98.0% | 99.2% |
| Conclusion | Conforms Specifications of Enterprise Standard. | |
