Calmapsin® (AG1549) is an off-white to beige solid powder with a purity of ≥94%. It is odorless, insoluble in water, and soluble in methanol, ethanol, and DMSO. It has a melting point between 117–124°C and a molecular weight of 477.33 g/mol. The product is microbiologically safe, with low heavy metal content and minimal residual solvents. It has a shelf life of at least 24 months when stored in cool, dry conditions.