Used as a glycosyl donor in carbohydrate chemistry for the synthesis of mannose-containing oligosaccharides and glycoconjugates. Its acetyl protecting groups stabilize the molecule during reactions, while the thio linkage allows for selective activation under mild conditions. Commonly employed in the preparation of biologically active glycosides, vaccines, and glycolipids where precise stereochemistry is critical. Also utilized in enzymatic and chemoenzymatic synthesis due to compatibility with glycosyltransferases after deprotection.