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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:78829 term browser browse the term
Definition:An omega-hydroxy fatty acid ascaroside obtained by formal condensation of the alcoholic hydroxy group of 3-hydroxypropanoic acid with ascarylopyranose (the alpha anomer). A major component of the dauer pheromone of the nematode Caenorhabditis elegans, it synergises with ascr#2 and ascr#3 as a population-density signal to promote entry into an alternate larval stage, the nonfeeding and highly persistent dauer diapause.
Synonyms:exact_synonym: 3-[(3,6-dideoxy-alpha-L-arabino-hexopyranosyl)oxy]propanoic acid
 related_synonym: (-)-3-(3'R,5'R-dihydroxy-6'S-methyl-(2H)-tetrahydropyran-2'-yloxy)-propanoic acid;   3-hydroxypropanoic acid 3-O-alpha-ascarylopyranoside;   Formula=C9H16O6;   InChI=1S/C9H16O6/c1-5-6(10)4-7(11)9(15-5)14-3-2-8(12)13/h5-7,9-11H,2-4H2,1H3,(H,12,13)/t5-,6+,7+,9+/m0/s1;   InChIKey=RYYMJVGKZLQYPG-YYWONIAYSA-N;   SMILES=C[C@@H]1O[C@@H](OCCC(O)=O)[C@H](O)C[C@H]1O;   ascaroside C3
 xref: CAS:1086696-26-5;   PMID:18791072;   PMID:19174521;   PMID:19346493;   PMID:19349961;   PMID:19496754;   PMID:19545143;   PMID:19665885;   PMID:19797623;   PMID:20135027;   PMID:20151418;   PMID:20713521;   PMID:21423575;   PMID:21849976;   PMID:21959166;   PMID:22239548;   PMID:22253572;   PMID:22503501;   PMID:22665789;   PMID:22701701;   PMID:22920251;   PMID:23689506;   Reaxys:22233379;   SMID:ascr%235%0D
 cyclic_relationship: is_conjugate_acid_of CHEBI:139707

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  CHEBI ontology 19770
    role 19720
      biological role 19720
        molecular messenger 18298
          semiochemical 10
            pheromone 10
              ascr#5 0
Path 2
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  CHEBI ontology 19770
    subatomic particle 19768
      composite particle 19768
        hadron 19768
          baryon 19768
            nucleon 19768
              atomic nucleus 19768
                atom 19768
                  main group element atom 19662
                    p-block element atom 19662
                      carbon group element atom 19580
                        carbon atom 19571
                          organic molecular entity 19571
                            heteroorganic entity 19206
                              organochalcogen compound 18951
                                organooxygen compound 18877
                                  carbohydrates and carbohydrate derivatives 12259
                                    carbohydrate 12259
                                      monosaccharide 4187
                                        aldose 2558
                                          aldohexose 2200
                                            deoxyhexose 106
                                              dideoxyhexose 0
                                                ascarylose 0
                                                  ascarylopyranose 0
                                                    alpha-ascarylopyranose 0
                                                      ascaroside 0
                                                        hydroxy fatty acid ascaroside 0
                                                          omega-hydroxy fatty acid ascaroside 0
                                                            ascr#5 0
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