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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:25812 term browser browse the term
Definition:An elemental molecule with formula O3. An explosive, pale blue gas (b.p. -112degreeC) that has a characteristic, pungent odour, it is continuously produced in the upper atmosphere by the action of solar ultraviolet radiation on atmospheric oxygen. It is an antimicrobial agent used in the production of bottled water, as well as in the treatment of meat, poultry and other foodstuffs.
Synonyms:exact_synonym: trioxygen
 related_synonym: Formula=O3;   InChI=1S/O3/c1-3-2;   InChIKey=CBENFWSGALASAD-UHFFFAOYSA-N;   O3;   Ozon;   SMILES=[O-][O+]=O;   Trisauerstoff;   [OO2];   ozono;   trioxygene
 xref: CAS:10028-15-6;   Gmelin:1101;   HMDB:HMDB0035409
 xref_mesh: MESH:D010126
 xref: MolBase:931;   PMID:10205911;   PMID:10226494;   PMID:10552743;   PMID:11029342;   PMID:11203434;   PMID:11568152;   PMID:12509241;   PMID:15598576;   PMID:15963550;   PMID:1717074;   PMID:17674823;   PMID:18250191;   PMID:18699586;   PMID:19519548;   PMID:19580672;   PMID:19723209;   PMID:19827485;   PMID:20477724;   PMID:23488636;   PMID:23501341;   PMID:23517299;   PMID:23556239;   PMID:24001808;   PMID:24176344;   PMID:24188305;   PMID:7763188;   PMID:8255146;   PMID:9202716;   Reaxys:4921393;   Wikipedia:Ozone

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    Path 1
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      CHEBI ontology 19876
        role 19851
          application 19687
            tracer 7355
              ozone 7347
    Path 2
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      CHEBI ontology 19876
        subatomic particle 19874
          composite particle 19874
            hadron 19874
              baryon 19874
                nucleon 19874
                  atomic nucleus 19905
                    atom 19905
                      main group element atom 19821
                        p-block element atom 19821
                          chalcogen 19570
                            oxygen atom 19543
                              oxygen molecular entity 19543
                                elemental oxygen 8970
                                  triatomic oxygen 7347
                                    ozone 7347
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