The molecule is a 1-(1Z-alk-1-enyl)-sn-glycero-3-phosphoserine(1-) that is the conjugate base of 1-(1Z-octadecenyl)-2-arachidonoyl-sn-glycero-3-phosphoserine, obtained by deprotonation of the phosphate and carboxy groups and protonation of the amino group; major species at pH 7.3. It is a conjugate base of a 1-(1Z-octadecenyl)-2-arachidonoyl-sn-glycero-3-phosphoserine.
(2S)-2-azaniumyl-3-[[(2R)-2-[(5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoyl]oxy-3-[(Z)-octadec-1-enoxy]propoxy]-oxidophosphoryl]oxypropanoate