Letrozole CAS:112809-51-5

Product Detail

Basic information of Letrozole CAS:112809-51-5


Name	Letrozole
Alias	4,4'-(1H-1,2,4-TRIAZOL-1-YLMETHYLENE) BIS-BENZONITRILE;FEMARA;CGS-20267;LETROZOL;LETROZOLE;LetrozoleUsp28;Letrozole99%;CGS-20267, Femara
CAS NO.	112809-51-5
Molecular Formula	C17H11N5
Molecular Weight	285.3
Quality Standard	USP32
Package Size	25kg/drum

Use of Letrozole:

A nonsteroidal aromatase inhibitor structurally related to Fadrozole. Antineoplastic

COA of Letrozole :

Items	Specification
Appearance	White to yellowish, crystalline powder
Identification	A.IR spectrum of sample should be identical to that of Reference Standard;
	The retention time of major peak in the chromatogram of the Assay preparation should correspond to that in the chromatogram of Standard preparation, as obtained in the Assay.
	Showing the white precipitate reaction.
Water	Not more than 0.3%
Residue on Ignition	Not more than 0.1%
Heavy Metals	Not more than 0.001%
Related Compounds	Compound A: Not more than 0.1%
4,4',4'-methylidenetrisbenzonitrile	Not more than 0.2%
Any other impurity	Not more than 0.2%
All other impurities	Not more than 0.2%
Residual Sovents	Ethanol: Not more than 3000ppm
Ethyl acetate	Not more than 2000ppm
DMF	Not more than 880ppm
Microbe Limit	Bacteria: Not more than 200/g
Mold and yeast	Not more than 50/g
Escherichia coli	should be absent
Assay(anhydrous)	98.0% to 102.0% of Cl7H11N5 on dried basis
Packaging and Storage	Preserve in tight containers at controlled room temperature.
Conclusion	Conforms to the USP32.

For more details, pls. contact with me.
Ms. Denise Lai
International Trade Dept.
Sinoway Industrial Co.,Ltd 
(established in 1987, ISO9001:2008 and SGS certificated)
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Tel:0086 592 5887167
Fax:0086 592 5854960
Skype: sinoway-dl
E-Mail: denise@china-sinoway.com 
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