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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:auxin a
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Accession:CHEBI:142254 term browser browse the term
Definition:A carbocyclic compound that is 3,5-di-sec-butylcyclopentene which is substituted by a 4-carboxy-1,3,4-trihydroxybutyl group at position 1.
Synonyms:exact_synonym: 4-deoxy-5-C-(3,5-di-sec-butylcyclopent-1-en-1-yl)pentonic acid
 related_synonym: 5-(2,4-di-sec-butyl-cyclopent-5-enyl)-2,3,5-trihydroxy-valeric acid;   5-(3,5-di-sec-butylcyclopent-1-enyl)-2,3,5-trihydroxyvaleric acid;   5-C-(3,5-bis(1-methylpropyl)-1-cyclopenten-1-yl)-4-deoxy-pentonic acid;   Formula=C18H32O5;   InChI=1S/C18H32O5/c1-5-10(3)12-7-13(11(4)6-2)14(8-12)15(19)9-16(20)17(21)18(22)23/h8,10-13,15-17,19-21H,5-7,9H2,1-4H3,(H,22,23);   InChIKey=RKOUCPMGBBKLNK-UHFFFAOYSA-N;   SMILES=CCC(C)C1CC(C(C)CC)C(=C1)C(CC(C(C(=O)O)O)O)O;   auxen triolic acid;   auxentriolic acid
 xref: CAS:491-14-5;   Chemspider:83749;   FooDB:FDB017851;   HMDB:HMDB0038483;   Reaxys:3152986

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Term Annotations click to browse term
  CHEBI ontology 20059
    chemical entity 20058
      molecular entity 20055
        polyatomic entity 19983
          molecule 19841
            cyclic compound 19615
              homocyclic compound 18521
                carbocyclic compound 18521
                  auxin a 0
Path 2
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  CHEBI ontology 20059
    subatomic particle 20056
      composite particle 20056
        hadron 20056
          baryon 20056
            nucleon 20056
              atomic nucleus 20056
                atom 20056
                  main group element atom 19956
                    p-block element atom 19956
                      carbon group element atom 19882
                        carbon atom 19873
                          organic molecular entity 19873
                            organic group 18943
                              organic divalent group 18928
                                organodiyl group 18928
                                  carbonyl group 18877
                                    carbonyl compound 18877
                                      carboxylic acid 18565
                                        hydroxy carboxylic acid 3712
                                          hydroxy monocarboxylic acid 3712
                                            auxin a 0
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