2-Acetyl-S-octadecyl-1-thioglycero-3-phosphocholine 3,5-Dioxa-9-thia-4-phosphaheptacosan-1-aminium, 7-(acetyloxy)-4-hydroxy-N,N,N-trimethyl-, hydroxide, inner salt, 4-oxide, (+-)- 89314-81-8 Thio-paf Thio-platelet activating factor