sphingomyelin d18:1 sphingomyelin 42:2 N-[(15Z)-tetracosenoyl]sphing-4-enine-1-phosphocholine (2S,3R,4E)-3-hydroxy-2-[(15Z)-tetracos-15-enoylamino]octadec-4-en-1-yl 2-(trimethylazaniumyl)ethyl phosphate 812.677 813.22490 A sphingomyelin d18:1 in which the N-acyl group is specified as (15Z)-tetracosenoyl. C24:1 Sphingomyelin C47H93N2O6P CHEBI:74535 HMDB:HMDB0012107 InChI=1S/C47H93N2O6P/c1-6-8-10-12-14-16-18-20-21-22-23-24-25-26-27-29-31-33-35-37-39-41-47(51)48-45(44-55-56(52,53)54-43-42-49(3,4)5)46(50)40-38-36-34-32-30-28-19-17-15-13-11-9-7-2/h20-21,38,40,45-46,50H,6-19,22-37,39,41-44H2,1-5H3,(H-,48,51,52,53)/b21-20-,40-38+/t45-,46+/m0/s1 LIPID_MAPS_instance:LMSP03010007 N-(15Z-tetracosenoyl)-sphing-4-enine-1-phosphocholine N-(15Z-tetracosenoyl)sphing-4-enine-1-phosphocholine PMID:24362891 SM(d18:1/24:1(15Z)) WKZHECFHXLTOLJ-QYKFWSDSSA-N [H][C@@](O)(\C=C\CCCCCCCCCCCCC)[C@]([H])(COP([O-])(=O)OCC[N+](C)(C)C)NC(=O)CCCCCCCCCCCCC\C=C/CCCCCCCC chebi_ontology N-tetracosenoylsphingosine-1-phosphocholine