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    レトロゾール99%
    商品番号: 7899750
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    包装

    包装: 1kg/bag; 5kg/tin; 25kg/drum

    仕様

    レトロゾール99%1.casno: 112809-51-52.品質: usp323.文書: gmp4.使用: 抗腫瘍剤

    5.Basic information about Letrozole 99% CAS:112809-51-5:  

    Product Name: Letrozole

    Synonyms:  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

    Appearance: White to yellowish,crystalline powder

    Assay: 98.0%-102.0%

    Usage:  A nonsteroidal aromatase inhibitor structurally related to Fadrozole. Antineoplastic

     

    6.COA of Letrozole 99% CAS:112809-51-5:  

    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 0.1%

    All other impurities: Not more than 0.3%

    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.

     

    7.Sinoway's advantages:

    (1)ISO 9001:2008 certificated company

    (2)27 years in pharmaceutical industry

    (3)Good quality,competitive price and professional service

    (4)China office of Fischer Chemicals AG (Switzerland)

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