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    Melatonin
    Structural formula:Melatonin

    Product Name: Melatonin
    Molecular Formula: C13H16N2O2
    Molecular Weight: 232.28
    CAS#: 73-31-4

        ITEM

     STANDARD

    RESULT

    Identification:Positive

    Positive reaction

    Positive reaction

    Loss on drying

    0.5% MAX

             0.26%

    Residue on ignition

    0.5% MAX

     

    0.17%

    Heavy metal

              10 ppm MAX

     

            Conform

    Individual  impurity

               0.1% MAX

     

            Conform

    Total impurities

               1.0% MAX

     

            Conform

              Assay(TCL

    ≥99.0%

            ≥99.0%

             Assay(HPLC)

    ≥99.0%

             99.57%

    Melting point

     

    117~120℃

         118.3~118.5℃

    CONCLUSION : COMPLY WITH THE REQUIREMENT BP2018/USP39

     


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