D-Arabinose 5-phosphate (sodium) is a biochemical reagent used in the study of glycobiology. Glycobiology focuses on the structure, synthesis, biology, and evolution of sugars. This field involves carbohydrate chemistry, the enzymology of glycan formation and degradation, protein-glycan interactions, and the role of glycans in biological systems, and is closely related to basic research, biomedicine, and biotechnology.