– 4-O-Acetyl-2,5-anhydro-1,3-O-isopropylidene-D-glucitol is a biochemical reagent commonly employed in glycobiology research. This field focuses on the structure, synthesis, biology, and evolution of sugars, covering carbohydrate chemistry, glycan synthesis and degradation enzymology, protein-glycan interactions, and the role of glycans in biological systems. Glycobiology is closely connected to fundamental research, biomedicine, and biotechnology.