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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:selenium-77 atom
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Accession:CHEBI:52457 term browser browse the term
Definition:A stable isotope of selenium with relative atomic mass 76.919915, 7.60 atom percent natural abundance and nuclear spin 1/2.
Synonyms:related_synonym: (77)34Se;   Formula=[77Se];   InChI=1S/Se/i1-2;   InChIKey=BUGBHKTXTAQXES-YPZZEJLDSA-N;   SMILES=[77Se];   Se-77;   selenium, isotope of mass 77;   selenium-(77)Se;   selenium-77
 xref: Chemspider:9507361;   PMID:16158304;   PMID:23159557;   PMID:25848959;   PMID:25923042;   PMID:27129100;   PMID:30828921;   PMID:32453871;   PMID:34153173

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19831
    chemical entity 19829
      atom 19829
        nonmetal atom 19767
          selenium atom 3251
            selenium-77 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19831
    subatomic particle 19829
      composite particle 19829
        hadron 19829
          baryon 19829
            nucleon 19829
              atomic nucleus 19829
                atom 19829
                  main group element atom 19779
                    p-block element atom 19779
                      chalcogen 19534
                        selenium atom 3251
                          selenium-77 atom 0
paths to the root