Used as a chiral building block in the synthesis of complex carbohydrates and nucleoside analogs. Its protected hydroxyl groups allow selective deprotection and further functionalization, making it valuable in pharmaceutical research, particularly in antiviral and anticancer drug development. The tetrahydrothiophene core serves as a scaffold for glycosidic mimetics, where the sulfur atom can influence conformation and metabolic stability. Commonly employed in stereoselective synthesis due to its defined stereochemistry.