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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:triplet dioxygen
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Accession:CHEBI:27140 term browser browse the term
Definition:A dioxygen that has formula O2.
Synonyms:exact_synonym: dioxidanediyl;   dioxygen(2.) (triplet)
 related_synonym: Formula=O2;   InChI=1S/O2/c1-2;   InChIKey=MYMOFIZGZYHOMD-UHFFFAOYSA-N;   O2;   O2(2.);   SMILES=[O][O];   triplet molecular oxygen
 xref: Gmelin:492

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19770
    role 19720
      chemical role 19260
        oxidising agent 9920
          dioxygen 3525
            triplet dioxygen 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19770
    subatomic particle 19768
      composite particle 19768
        hadron 19768
          baryon 19768
            nucleon 19768
              atomic nucleus 19768
                atom 19768
                  main group element atom 19662
                    p-block element atom 19662
                      chalcogen 19391
                        oxygen atom 19354
                          oxygen molecular entity 19354
                            elemental oxygen 5767
                              diatomic oxygen 3555
                                dioxygen 3525
                                  triplet dioxygen 0
paths to the root