alpha-D-GlcNAcp-(1->4)-alpha-D-(2,3-diNAc)ManAp
alpha-d-glcnacp-(1->4)-alpha-d-(2,3-dinac)manap
An amino disaccharide consisting of 2-acetamido-2-deoxy-α-<small>D</small>-glucopyranose and 2,3-diacetamido-2,3-dideoxy-α-<small>D</small>-mannopyranuronic acid joined in sequence by a (1→4) glycosidic bond.