(-)-1,4-Di-O-tosyl-2,3-O-isopropylidene-L-threitol

(-)-1,4-Di-O-tosyl-2,3-O-isopropylidene-L-threitol is a class of biochemical reagents used in glycobiology research. Glycobiology studies the structure, synthesis, biology, and evolution of sugars. It involves carbohydrate chemistry, enzymology of glycan formation and degradation, protein-glycan recognition, and the role of glycans in biological systems. This field is closely related to basic research, biomedicine, and biotechnology.