The molecule is a 1-acyl-2-octadecanoyl-sn-glycero-3-phosphate(2-) in which the 1-acyl group is specified as hexadecanoyl (palmitoyl); major species at pH 7.3. It is a conjugate base of a 1-hexadecanoyl-2-octadecanoyl-sn-glycero-3-phosphate.
[(2R)-3-hexadecanoyloxy-2-octadecanoyloxypropyl] phosphate