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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, pleasant 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
    Term Annotations click to browse term
      CHEBI ontology 19800
        role 19751
          application 19498
            tracer 3375
              ozone 3362
    Path 2
    Term Annotations click to browse term
      CHEBI ontology 19800
        subatomic particle 19799
          composite particle 19799
            hadron 19799
              baryon 19799
                nucleon 19799
                  atomic nucleus 19799
                    atom 19799
                      main group element atom 19698
                        p-block element atom 19698
                          chalcogen 19450
                            oxygen atom 19423
                              oxygen molecular entity 19423
                                elemental oxygen 5815
                                  triatomic oxygen 3362
                                    ozone 3362
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