Letrozole CAS:112809-51-5
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1
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China Mainland
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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. |
Ms. Denise Lai
(established in 1987, ISO9001:2008 and SGS certificated)
Mobile/Wechat/WhatsApp: 0086 13459239406
Specializing in the research, development and custom manufacturing of letrozole cas:112809-51-5, SINOWAY, though situated in China, enjoys good reputation among international customers. We supply you with pure natural and well extracted products which can give the best care.
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