1 PFS (2r)-2-(acetyloxy)-3-(hexadecyloxy)propyl 2-(trimethylammonio)ethyl phosphate 1.000 2 A1ACX 3-[oxidanyl-[2-(trimethyl-$L^{4}-azanyl)ethoxy]phosphoryl]oxypropyl hexadecanoate 0.861 3 KIP [(2~{R})-2-oxidanyl-3-[oxidanyl-[2-(trimethyl-$L^{5}-azanyl)ethoxy]phosphoryl]oxy-propyl] hexadecanoate 0.838 4 LP3 (7r)-4,7-dihydroxy-N,N,N-trimethyl-10-oxo-3,5,9-trioxa-4-phosphaheptacosan-1-aminium 4-oxide 0.795 5 LSC (4r,7r,18e)-4,7-dihydroxy-N,N,N-trimethyl-10-oxo-3,5,9-trioxa-4-phosphaheptacos-18-en-1-aminium 4-oxide 0.795 6 LIO [1-pentadecanoyl-2-decanoyl-glycerol-3-yl]phosphonyl choline 0.773 7 LAP [2-((1-oxododecanoxy-(2-hydroxy-3-propanyl))-phosphonate-oxy)-ethyl]-trimethylammonium 0.730 8 HGP (1-hexadecanoyl-2-tetradecanoyl-glycerol-3-yl) phosphonyl choline 0.729 9 LPX (2s)-3-{[(R)-(2-aminoethoxy)(hydroxy)phosphoryl]oxy}-2-hydroxypropyl hexadecanoate 0.711 10 K9G [(2~{R})-1-hexadecanoyloxy-3-[oxidanyl-[2-(trimethyl-$L^{4}-azanyl)ethoxy]phosphoryl]oxy-propan-2-yl] octadec-9-enoate 0.707 11 PCF 1,2-diacyl-sn-glycero-3-phoshocholine 0.700