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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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