D-Threitol is widely used in the pharmaceutical industry as a chiral building block for the synthesis of various drugs, particularly those requiring specific stereochemistry. It serves as a precursor in the production of antiviral and anticancer agents, where its stereochemical properties are crucial for the drug's efficacy. In the food industry, it is employed as a low-calorie sweetener and stabilizer, providing a sugar substitute that is suitable for diabetic-friendly products. Additionally, D-Threitol is utilized in the cosmetics sector as a humectant, helping to retain moisture in skincare formulations. Its ability to form stable complexes also makes it valuable in biochemical research for studying enzyme mechanisms and protein interactions.