Calcium dobesilate is 2,5-dihydroxy benzene sulfonic acid calcium salt. Molecular formula of calcium dobesilate is C12H10CaO10S2. Molecular weight is 418.41 and melting point is 300°C. Color changes to pink upon exposure to air. Very soluble in water and alcohol, practically insoluble in ether, benzene, chloroform. Therapeutic Category: Vasotropic.