Synonyms: 3,5,9-Trioxa-4-phosphapentacosan-1-aminium,4-hydroxy-N,N,N-trimethyl-10-oxo-7-[(1-oxohexadecyl)oxy]-, inner salt, 4-oxide,(S)-; D-Dipalmitoylphosphatidylcholine; D-a-Dipalmitoylphosphatidylcholine; Dipalmitoyl-D-a-phosphatidylcholine;sn-1-Dipalmitoylphosphatidylcholine