Letrozole Femara Anti Estrogen Steroids Drugs CAS112809-51-5

Letrozole Femara Anti Estrogen Steroids Drugs CAS112809-51-5

Letrozole Femara Anti Estrogen Steroids Drugs CAS112809-51-5 Whatsapp:+8618126147481 Skype:cherrysendi Emial:cherrysendi@chembj.com What is Letrozole Letrozole lowers estrogen levels in postmenopausal women, which may slow the growth of certain types of breast tumors that need estrogen to grow...

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Letrozole Femara Anti Estrogen Steroids Drugs CAS112809-51-5

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What is Letrozole

Letrozole lowers estrogen levels in postmenopausal women, which may slow the growth of certain types of breast tumors that need estrogen to grow in the body.

Letrozole is used to treat breast cancer in postmenopausal women. It is often given to women who have been taking tamoxifen (Nolvadex, Soltamox) for 5 years.

Letrozole may also be used for purposes not listed in this medication guide.


Letrozole effect

This medication is used to treat certain types of breast cancer (such as hormone-receptor-positive breast cancer) in women after menopause. Letrozole is also used to help prevent the cancer from returning. Some breast cancers are made to grow faster by a natural hormone called estrogen. Letrozole decreases the amount of estrogen the body makes and helps to slow or reverse the growth of these breast cancers.


Letrozole side effects

Hot flashes, hair loss, joint/bone/muscle pain, tiredness, unusual sweating, nausea,diarrhea, dizziness, and trouble sleeping may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.


Letrozole doasge

Take letrozole on a regular schedule to get the most benefit from it.

If you miss a dose of letrozole, take it as soon as possible. If it is almost time for the next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.

Ask your health care provider any questions you may have about how to use letrozole.


Letrozole COA

Tests

Specifications

Results

Appearance

White or off-white crystaline powder

White
Crystalline powder

Solubility

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.


Famale Hormone

CAS

Anti Estrongen Steriods

CAS

Estriol

50-27-1

Anastrozole

120511-73-1

Pregnenolone

145-13-1

Clomifene Citrate

50-41-9

Altrenogest

850-52-2

Toremifene citrate

89778-27-8

Megestrol acetate

595-33-5

Tamoxifen citrate

54965-24-1

Medroxyprogesterone acetate

71-58-9

Tamoxifen

10540-29-1

Estrone

53-16-7

Letrozole

112809-51-5

Mifepristone

84371-65-3

Methoxydienone

2322-77-2

Ethinylestradiol

57-63-6

Trilostane

13647-35-3

Drospirenone

67392-87-4



Estradiol valerate

979-32-8



Estradiol benzoate

50-50-0




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