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Melatonin

Molecular formula: C13H16N2O2
Molecular weight: 232.28
English name: Melatonin
CAS number: 73-31-4

project

standard

experimental result

differentiate

Infrared or nuclear resonance

conforms

Loss on drying

0.5% MAX

         0.26%

Ignition residue

0.5% MAX

0.17%

heavy metal

10 ppm MAX

        符合規(guī)定

single impurity

0.1% MAX

        符合規(guī)定

Total impurities

           1.0% MAX

        符合規(guī)定

Assay

(TCL)

≥99.0%

        ≥99.0%

Assay

(HPLC)

          ≥99.0%

         99.57%

melting point

117~120℃

118.3~118.5℃

Conclusion: This product meets the requirementsBP2018/USP39

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