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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:78830 term browser browse the term
Definition:An (omega-1)-hydroxy fatty acid ascaroside obtained by formal condensation of the alcoholic hydroxy group of (2E,6R)-6-hydroxyhept-2-enoic acid with ascarylopyranose (the alpha anomer). A metabolite of the nematode Caenorhabditis elegans, it is weakly dauer inducing and a weak male-attractant.
Synonyms:exact_synonym: (2E,6R)-6-[(3,6-dideoxy-alpha-L-arabino-hexopyranosyl)oxy]hept-2-enoic acid
 related_synonym: 6R-(3'R,5'R-dihydroxy-6'S-methyl-(2H)-tetrahydropyran-2'-yloxy)-2E-heptenoic acid;   Formula=C13H22O6;   InChI=1S/C13H22O6/c1-8(5-3-4-6-12(16)17)18-13-11(15)7-10(14)9(2)19-13/h4,6,8-11,13-15H,3,5,7H2,1-2H3,(H,16,17)/b6-4+/t8-,9+,10-,11-,13-/m1/s1;   InChIKey=GGHOMCWJOMBZEK-LHYQPRBASA-N;   SMILES=C[C@H](CC\\C=C\\C(O)=O)O[C@@H]1O[C@@H](C)[C@H](O)C[C@H]1O
 xref: CAS:1139837-37-8;   LIPID_MAPS_instance:LMFA13040006;   PMID:19346493;   PMID:19665885;   PMID:20135027;   PMID:20151418;   PMID:20422068;   PMID:21423575;   PMID:22239548;   PMID:22253572;   PMID:22503501;   PMID:22665789;   PMID:22701701;   Reaxys:22233384;   SMID:ascr%237%0D
 cyclic_relationship: is_conjugate_acid_of CHEBI:139710

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  CHEBI ontology 19761
    role 19711
      biological role 19711
        molecular messenger 18294
          semiochemical 10
            pheromone 10
              ascr#7 0
                ascr#7-CoA 0
                ascr#8 0
                icas#7 0
Path 2
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  CHEBI ontology 19761
    subatomic particle 19759
      composite particle 19759
        hadron 19759
          baryon 19759
            nucleon 19759
              atomic nucleus 19759
                atom 19759
                  main group element atom 19653
                    p-block element atom 19653
                      carbon group element atom 19569
                        carbon atom 19559
                          organic molecular entity 19559
                            organic group 18593
                              organic divalent group 18584
                                organodiyl group 18584
                                  carbonyl group 18499
                                    carbonyl compound 18499
                                      carboxylic acid 18151
                                        carboacyl group 17410
                                          univalent carboacyl group 17410
                                            formyl group 8787
                                              aldehyde 8787
                                                aliphatic aldehyde 2139
                                                  fatty aldehyde 2128
                                                    medium-chain fatty aldehyde 118
                                                      (E)-hept-2-enal 0
                                                        (E)-hept-2-enoic acid 0
                                                          (2E,6R)-6-hydroxyhept-2-enoic acid 0
                                                            ascr#7 0
                                                              ascr#7-CoA 0
                                                              ascr#8 0
                                                              icas#7 0
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