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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:31046 term browser browse the term
Definition:An epsilon-lactone that has formula C6H10O3.
Synonyms:exact_synonym: 3-hydroxyoxepan-2-one
 related_synonym: 1-Oxa-2-oxo-3-hydroxycycloheptane;   Formula=C6H10O3;   InChI=1S/C6H10O3/c7-5-3-1-2-4-9-6(5)8/h5,7H,1-4H2;   InChIKey=HUFRMAUWIZDZIJ-UHFFFAOYSA-N;   SMILES=OC1CCCCOC1=O
 xref: CAS:80816-54-2;   KEGG:C12314

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19761
    chemical entity 19761
      atom 19759
        nonmetal atom 19641
          oxygen atom 19345
            oxygen molecular entity 19345
              organooxygen compound 18868
                ether 16630
                  cyclic ether 10246
                    oxepane 0
                      2-hydroxyhexano-6-lactone 0
Path 2
Term Annotations click to browse term
  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 ester 15500
                                        lactone 9716
                                          epsilon-lactone 0
                                            2-hydroxyhexano-6-lactone 0
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