Used as a key intermediate in the synthesis of sialic acid derivatives and other biologically active carbohydrates. Its azido group allows for further functionalization via click chemistry or reduction to an amine, making it valuable in glycochemistry and drug development. Commonly employed in the preparation of glycosyl donors and acceptors for oligosaccharide assembly. Also applied in the development of glycoconjugate vaccines and enzyme inhibitors targeting glycosidases.