The molecule is an anionic phospholipid arising from deprotonation of all three free phosphate OH groups of 1,2-dipalmitoylglycero-3-phospho-(1'-D-myo-inositol-3'-phosphate); major species at pH 7. It is a conjugate base of a 1,2-dipalmitoylglycero-3-phospho-(1'-D-myo-inositol-3'-phosphate).
[(1R,2R,3S,4R,5S,6S)-3-[2,3-di(hexadecanoyloxy)propoxy-oxidophosphoryl]oxy-2,4,5,6-tetrahydroxycyclohexyl] phosphate