Diacetone-D-Mannitol is a selectively protected derivative of D-mannitol, featuring two acetonide groups that shield four hydroxyl functions. It serves primarily as a chiral intermediate in organic synthesis within the pharmaceutical industry, enabling the production of enantiomerically pure drugs and bioactive compounds through stereoselective reactions. Its rigid structure facilitates the creation of complex molecules with specific stereochemistry essential for pharmacological activity. Additionally, it is used in the synthesis of specialty chemicals, including fine chemicals, ligands, and materials with tailored properties, such as in polymer chemistry or as precursors for surfactants. It is not typically used directly in food or cosmetic formulations due to its synthetic nature.