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      Methotrexate
    【CAS No】 59-05-2
    【Molecular formula】 C20H22N8O5
    【Molecular weight】 454.45
    【Structure】

    

    【Characteristics】 yellow crystalline powder
    【Item】 Standard:USP28,BP2003,EP5 Assay:98.0%-102.0%
                     Water:≤12.0% Specific Rotation:+19 º -+24 º
                    Sulphate ash:≤0.1% Pyrogens:Negative
                    Related Substance:2,4Biaminoperidin-6-y1 methonol≤0.5%
                    Total impuriyt≤2.0%
    【Used】 Intermediate


 

 

 





  
 
                 
          
 
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