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    7-Phenylacetamide-3-Hydroxy-3-cephem-4-carboxylic acid diphenylmethyl ester

    Name:7-Phenylacetamide-3-Hydroxy-3-cephem-4-carboxylic acid diphenylmethyl ester

    CAS no. : 54639-48-4

    Molecular formula: C28H24N2O5S

    Molecular weight: 500.56

    Structural formula:

    Density: 1.6  g/cm3at 25 °C

    Boiling point: 715.5°C at 760 mmHg

    Appearance:White or off white powder

    Intermediates of Ceftizoxime sodium

     

    Analysis

    Specification

    Appearance

    White or off white powder

    Optical rotation

    +140°-+145°

    Colour(420nm)

    ≤0.5AU

    Related substance

     

     

     

    ≤0.5%

    Method 1

    Rn2.14

    Rn2.28

    ≤0.5%

    Maximum single

    Unk.impurity

     

    ≤0.1%

    Method 2

     

     

    ≤0.1%

    BPA

    TPE

    ≤0.1%

    GENH

    ≤0.1%

    Maximum single

    Unk.impurity

     

    ≤0.1%

    Total impuries

    ≤1.0%

    Water

    ≤0.3%

    Residual solvent

    Toluene

    ≤3.0%

    Assay

    ≥95%


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