The molecule is a lipid A oxoanion arising from deprotonation of the phosphate OH groups and protonation of the amino groups of lipid A 1,4'-bis(2-aminoethyl diphosphate); major species at pH 7.3. It is a conjugate base of a lipid A 1,4'-bis(2-aminoethyl diphosphate).
[2-azaniumylethoxy(oxido)phosphoryl] [(2R,3R,4R,5S,6R)-6-[[(2R,3R,4R,5S,6R)-5-[[2-azaniumylethoxy(oxido)phosphoryl]oxy-oxidophosphoryl]oxy-3-[[(3R)-3-dodecanoyloxytetradecanoyl]amino]-6-(hydroxymethyl)-4-[(3R)-3-tetradecanoyloxytetradecanoyl]oxyoxan-2-yl]oxymethyl]-5-hydroxy-3-[[(3R)-3-hydroxytetradecanoyl]amino]-4-[(3R)-3-hydroxytetradecanoyl]oxyoxan-2-yl] phosphate