The molecule is an amino disaccharide composed of D-galactose and 2-acetamido-2-deoxy-beta-D-glucopyranosyl residues in (alpha-1->4) linkage. It has a role as an epitope. It is an amino disaccharide and a glucosamine oligosaccharide. It derives from a N-acetyl-beta-D-glucosamine and an alpha-D-galactose.
N-[(2R,3R,4R,5S,6R)-2,4-dihydroxy-6-(hydroxymethyl)-5-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-3-yl]acetamide