The molecule is a branched amino hexasaccharide consisting of a linear chain of a N-acetyl-alpha-D-glucosamine residue, two L-glycero-alpha-D-manno-heptose (Hep) residues and a 3-deoxy-alpha-D-manno-oct-2-ulosonic acid (Kdo) residue in a (1->2), (->3), (1->5) sequence, to the Hep residue nearest to the Kdo is linked also (1->4) a beta-D-glucose residue, with the Kdo residue also carrying a further Kdo residue linked (2->4). Corresponds to a fragment of an inner core lipooligosaccharide epitope from Neisseria meningitidis. It is an amino hexasaccharide and a glucosamine oligosaccharide.
(2R,4R,5R,6R)-2-[(2R,4R,5R,6R)-5-[(2R,3S,4R,5R,6R)-4-[(2R,3S,4S,5S,6R)-3-[(2R,3R,4R,5S,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-[(1S)-1,2-dihydroxyethyl]-4,5-dihydroxyoxan-2-yl]oxy-6-[(1S)-1,2-dihydroxyethyl]-3-hydroxy-5-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-2-carboxy-6-[(1R)-1,2-dihydroxyethyl]-2-hydroxyoxan-4-yl]oxy-6-[(1R)-1,2-dihydroxyethyl]-4,5-dihydroxyoxane-2-carboxylic acid