Nomen Melatonin CAS 73-31-4 Formulae solidae albae hypotheticae C13H16N2O2 Formulae pondus 232.28 Assay 99% Aqua application -0.5% Vitaminum; Pharmaceutical mole medicamentorum; Synthetica materiae; Effectus albescentes medicamine rudis materiae; Curae sanitatis products, medicamentum; Pellentesque elit