The molecule is hexaanion of phosphoethanolamine-Kdo2-lipid A having anionic carboxy and phosphate groups and a protonated primary amino group; major species at pH 7.3. It is a conjugate base of a phosphoethanolamine-Kdo2-lipid A.
(2R,4R,5R,6S)-6-[(1R)-1-[2-azaniumylethoxy(oxido)phosphoryl]oxy-2-hydroxyethyl]-2-[(2R,4R,5R,6R)-2-carboxylato-6-[(1R)-1,2-dihydroxyethyl]-2-[[(2R,3S,4R,5R,6R)-5-[[(3R)-3-dodecanoyloxytetradecanoyl]amino]-6-[[(2R,3S,4R,5R,6R)-3-hydroxy-5-[[(3R)-3-hydroxytetradecanoyl]amino]-4-[(3R)-3-hydroxytetradecanoyl]oxy-6-phosphonatooxyoxan-2-yl]methoxy]-3-phosphonatooxy-4-[(3R)-3-tetradecanoyloxytetradecanoyl]oxyoxan-2-yl]methoxy]-5-hydroxyoxan-4-yl]oxy-4,5-dihydroxyoxane-2-carboxylate