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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:oxygen-19 atom
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Accession:CHEBI:36933 term browser browse the term
Definition:An oxygen atom that has formula O.
Synonyms:related_synonym: (19)8O;   (19)O;   Formula=[19O];   InChI=1S/O/i1+3;   InChIKey=QVGXLLKOCUKJST-AKLPVKDBSA-N;   SMILES=[19O];   oxygen-19
 xref: CAS:13982-18-8

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 494
    chemical entity 501
      atom 494
        nonmetal atom 487
          oxygen atom 448
            oxygen-19 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 494
    subatomic particle 494
      composite particle 494
        hadron 501
          baryon 494
            nucleon 494
              atomic nucleus 494
                atom 494
                  main group element atom 487
                    p-block element atom 487
                      chalcogen 445
                        oxygen atom 448
                          oxygen-19 atom 0
paths to the root