The molecule is an optically active form of 1,2-distearoylphosphatidylethanolamine having (S)-configuration. It is a conjugate base of a (S)-1,2-distearoylphosphatidylethanolaminium. It is an enantiomer of a (R)-1,2-distearoylphosphatidylethanolamine.
[(2S)-3-[2-aminoethoxy(hydroxy)phosphoryl]oxy-2-octadecanoyloxypropyl] octadecanoate