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Product name: Letrazole
CAS No: 112809-51-5
Molecular formula: C17H11N5
Molecular weight: 285.3
Appearance: White crystalline powder
Assay: 99%
Delivery time: 3~5 days
Minimum order: 5g
Payment:T/T, Western Union , Money Gram and Bitcoin
Delivery:Within 24hours After Your Payment
Usage: Letrozole(Femara )is a powerful Aromatase Inhibitor that was developed to fight breast cancer. For athletes and bodybuilders, it is a drug used to combat the estrogenic side effects of anabolic steroids water-retention, acne and gynocomastia. It will also raise testosterone levels because of the lowered estrogen in the body. Side effects from Femara include a lowered sex drive and continuous use can lead to lowered lipid function and an impaired immune system.
What is Letrazole ?
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.
Dosage of Letrazole
The good results of using doses ranged from about 0.25mgs per day to 0.5mgs per day .
Also, doses reported have ranged from .25mgs to as much as 2.5mgs per day.
The maximum dosage that a user would want to use would be 2.5mgs per day. It has been shown in numerous studies that this dosage will eliminate nearly all of the estrogen in the body in nearly all individuals. Any dose that is higher than this would simply be unneeded.
Letrozole comes in tablets of 2.5 milligrams (mg).
How much letrozole your doctor tells you to take may vary, but for cancer, a usual dose is 2.5 mg a day.
If you're taking letrozole for fertility treatment, your doctor may tell you to take either 2.5 mg or 5 mg of the drug, beginning on the third day of your period for five days.
Letrozole Overdose
If you think you might've overdosed on letrozole, contact an emergency room at 911 or a poison control center 800-222-1222 right away.
Missed Dose of Letrozole
If you miss a dose of letrozole, try to take it as soon as you remember.
However, if it's almost time for your next dose, skip the missed dose and continue on your regular dosing schedule.
Don't take extra doses to make up for a missed one.
Letrozole (Femara) Interactions
You should tell your doctor about all prescription, non-prescription, illegal, recreational, herbal, nutritional, or dietary drugs you're taking.
Don't take letrozole if you're taking the following drugs:
The supplement DHEA
Birth control pills, or hormone replacement therapy that contains estrogen
Norinyl 1+50 28-day (mestranol)
Soltamox (tamoxifen
Letrazole Application
Hormone Receptor Positive Postmenopausal Advanced Breast Cancer Medications
Hormone Receptor Positive Postmenopausal Early Breast Cancer After Adjuvant Tamoxifen Medications
Hormone Receptor Positive Breast Cancer Medications
Stimulation of Ovarian Function Medications
Breast Cancer that has Spread to Another Part of the Body Medications
Letrazole Specification
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 |
ldentification | (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. |
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