Melatonin Molecular formula,C13H16N2O2 Molecular weight,232,28 Assay:>99% CAS No:73-31-4 Product :Melatonin Molecular formula,C13H16N2O2 Molecular weight ... ,232,28 Assay:>99% CAS No:73-31-4 ... Property:white or light yellow powderProduct :Melatonin Molecular formula,C13H16N2O2 Molecular weight,232,28 Assay:>99% CAS No:73-31- ...