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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:55540 term browser browse the term
Definition:The anion of (R)-2-hydroxynonanoic acid.
Synonyms:exact_synonym: (2R)-2-hydroxynonanoate
 related_synonym: Formula=C9H17O3;   InChI=1S/C9H18O3/c1-2-3-4-5-6-7-8(10)9(11)12/h8,10H,2-7H2,1H3,(H,11,12)/p-1/t8-/m1/s1;   InChIKey=BTJFTHOOADNOOS-MRVPVSSYSA-M;   SMILES=CCCCCCC[C@@H](O)C([O-])=O
 cyclic_relationship: is_conjugate_base_of CHEBI:55538

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Path 1
Term Annotations click to browse term
  CHEBI ontology 0
    role 0
      biological role 0
        biochemical role 0
          metabolite 0
            eukaryotic metabolite 0
              plant metabolite 0
                nonanoate 0
                  (R)-2-hydroxynonanoate 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 0
    subatomic particle 0
      composite particle 0
        hadron 0
          baryon 0
            nucleon 0
              atomic nucleus 0
                atom 0
                  main group element atom 0
                    p-block element atom 0
                      carbon group element atom 0
                        carbon atom 0
                          organic molecular entity 0
                            organic ion 0
                              organic anion 0
                                carboxylic acid anion 0
                                  monocarboxylic acid anion 0
                                    fatty acid anion 0
                                      saturated fatty acid anion 0
                                        straight-chain saturated fatty acid anion 0
                                          nonanoate 0
                                            (R)-2-hydroxynonanoate 0
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