Melatonine 99% pharmaceutical Exporter API bulk drug supplier Product name: Melatonine Other name: Melatonin; L-Arabinitol CAS No.: 73-31-4;8041-44-9 Assay: 99% Packing: 1kg/tin;25kg/drum M.F.: C13H16N2O2 M.W.: 232.2783 Appearance: White crystals or white crystalline powder