1-O-Octadecyl-2-acetyl-sn-glycero-3-phosphoric acid-6'-trimethylammonium hexyl ester 7,9,13-Trioxa-8-phosphahentriacontan-1-aminium, 11-(acetyloxy)-8-hydroxy-N,N,N-trimethyl-, hydroxide, inner salt, 8-oxide, (R)- 99103-16-9 U 66985 U-66985