Beta-Cyclodextrin (β-CD) (CAS No. 7585-39-9) is a cyclic oligosaccharide consisting of seven glucose units linked by α-1,4-glycosidic bonds. It has a hydrophobic inner cavity and a hydrophilic outer surface, allowing it to form inclusion complexes with various guest molecules. β-CD is widely used in pharmaceuticals, food, cosmetics, and biotechnology to improve the solubility, stability, and bioavailability of active ingredients. It is also used in drug delivery, odor masking, and controlled release applications.