Used as a key intermediate in the synthesis of glycosyl donors and glycoconjugates, particularly in the preparation of uronic acid-containing oligosaccharides. Its azido group allows for selective modification via click chemistry, enabling efficient labeling or conjugation in complex carbohydrate assembly. The acetyl protecting groups stabilize the molecule during glycosylation reactions and can be removed selectively to expose hydroxyl groups for further chain elongation. Commonly applied in the development of vaccines, diagnostics, and bioactive natural product analogs where precise sugar structures are required.