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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.

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Accession:CHEBI:15441 term browser browse the term
Definition:A 2,3-epoxysqualene in which the chiral centre has S configuration. It is converted into lanosterol by lanosterol synthase (EC in a key rate-limiting step in the biosynthesis of chloesterol, steroid hormones, and vitamin D.
Synonyms:exact_synonym: (3S)-2,2-dimethyl-3-[(3E,7E,11E,15E)-3,7,12,16,20-pentamethylhenicosa-3,7,11,15,19-pentaen-1-yl]oxirane
 related_synonym: (3S)-2,3-dihydro-2,3-epoxysqualene;   (3S)-2,3-epoxy-2,3-dihydrosqualene;   (S)-2,3-dihydro-2,3-epoxysqualene;   (S)-2,3-epoxy-2,3-dihydrosqualene;   (S)-2,3-oxidosqualene;   (S)-Squalene-2,3-epoxide;   2,3-EDSQ;   2,3-epoxisqualene;   2,3-oxidosqualene;   Formula=C30H50O;   InChI=1S/C30H50O/c1-24(2)14-11-17-27(5)20-12-18-25(3)15-9-10-16-26(4)19-13-21-28(6)22-23-29-30(7,8)31-29/h14-16,20-21,29H,9-13,17-19,22-23H2,1-8H3/b25-15+,26-16+,27-20+,28-21+/t29-/m0/s1;   InChIKey=QYIMSPSDBYKPPY-RSKUXYSASA-N;   SMILES=CC(C)=CCC\\C(C)=C\\CC\\C(C)=C\\CC\\C=C(/C)CC\\C=C(/C)CC[C@@H]1OC1(C)C;   Squalene 2,3-epoxide;   Squalene 2,3-oxide;   oxidosqualene
 alt_id: CHEBI:11026;   CHEBI:11072;   CHEBI:18728;   CHEBI:372
 xref: HMDB:HMDB0001188;   HMDB:HMDB0059621;   KEGG:C01054;   KNApSAcK:C00007282;   LIPID_MAPS_instance:LMPR0106010010;   MetaCyc:EPOXYSQUALENE;   PDBeChem:2TX;   PMID:19951700;   PMID:26058429;   Reaxys:4710524

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  CHEBI ontology 19853
    role 19804
      biological role 19804
        biochemical role 19339
          metabolite 19319
            eukaryotic metabolite 18976
              plant metabolite 17450
                squalene 1
                  (S)-2,3-epoxysqualene 0
Path 2
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  CHEBI ontology 19853
    subatomic particle 19851
      composite particle 19851
        hadron 19851
          baryon 19851
            nucleon 19851
              atomic nucleus 19851
                atom 19851
                  main group element atom 19744
                    main group molecular entity 19744
                      s-block molecular entity 19491
                        hydrogen molecular entity 19483
                          hydrides 18748
                            organic hydride 18302
                              organic fundamental parent 18302
                                hydrocarbon 18030
                                  terpene 10277
                                    triterpene 674
                                      squalene 1
                                        squalene triterpenoid 0
                                          2,3-epoxysqualene 0
                                            (S)-2,3-epoxysqualene 0
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