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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

Term:sphingomyelin d18:1(1+)
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Accession:CHEBI:62490 term browser browse the term
Definition:A quaternary ammonium ion that is the conjugate acid of sphingomyelin d18:1, obtined by protonation of the anionic phosphate function.
Synonyms:related_synonym: Formula=C24H49N2O6PR;   N-acyl-sphing-4-enine-1-phosphocholine;   N-acyl-sphingosylphosphocholine;   N-acyl-sphingosylphosphocholines;   N-acyl-sphingosylphosphorylcholine;   N-acyl-sphingosylphosphorylcholines;   N-acylsphingosylphosphocholine;   SMILES=CCCCCCCCCCCCC\\C=C\\[C@@H](O)[C@H](COP(O)(=O)OCC[N+](C)(C)C)NC([*])=O;   Sphingomyelin;   sphingomyelins
 alt_id: CHEBI:58216
 xref: KEGG:C00550;   LIPID_MAPS_instance:LMSP03010000;   MetaCyc:Sphingomyelins;   PMID:10951276;   PMID:10970788;   PMID:12649340;   PMID:16341241;   PMID:19443184;   PMID:2187537;   PMID:8086039
 cyclic_relationship: is_conjugate_acid_of CHEBI:17636

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Term Annotations click to browse term
  CHEBI ontology 19773
    chemical entity 19773
      molecular entity 19772
        ion 15946
          organic ion 8466
            organic cation 7321
              quaternary ammonium ion 5111
                sphingomyelin d18:1(1+) 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19773
    subatomic particle 19772
      composite particle 19772
        hadron 19772
          baryon 19772
            nucleon 19772
              atomic nucleus 19772
                atom 19772
                  main group element atom 19662
                    main group molecular entity 19662
                      s-block molecular entity 19426
                        hydrogen molecular entity 19420
                          hydrides 18753
                            inorganic hydride 17457
                              pnictogen hydride 17433
                                nitrogen hydride 17280
                                  azane 17015
                                    ammonia 17014
                                      organic amino compound 17013
                                        amino alcohol 1029
                                          aminodiol 162
                                            2-aminooctadecene-1,3-diol 117
                                              2-aminooctadec-4-ene-1,3-diol 117
                                                sphing-4-enine 117
                                                  sphingosine 117
                                                    sphingosine-1-phosphocholine 0
                                                      sphingomyelin d18:1(1+) 0
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