4-O-(alpha-D-Galactopyranosyl)-D-galactose

a1-4Galactobiose

4-O-(alpha-D-Galactopyranosyl)-D-galactose is a specific disaccharide composed of two D-galactose units linked by an α-(1,4)-glycosidic bond. This compound is a key structural fragment of agars and other polysaccharides found in marine algae. It is used in research to study the structure and properties of these polysaccharides.