The molecule is a phosphatidylethanolamine 38:4 zwitterion obtained by transfer of a proton from the phosphate to the primary amino group of 1-octadecanoyl-2-(5Z,8Z,11Z,14Z-icosatetraenoyl)-sn-glycero-3-phosphoethanolamine; major species at pH 7.3. It is a tautomer of a 1-stearoyl-2-arachidonoyl-sn-glycero-3-phosphoethanolamine.
2-azaniumylethyl [(2R)-2-[(5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoyl]oxy-3-octadecanoyloxypropyl] phosphate