2-Keto-3-deoxy-octonate (KDO) is an essential constituent of lipopolysaccharide (LPS) that forms the outermost leaflet of Gram-negative bacterial outer membrane. LPS is mainly composed of lipid A. O-antigen and a core oligosaccharide. Two molecules of KDO are present per one molecule of LPS. https://macorners.shop/product-category/magnet/