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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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