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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 21797
    chemical entity 21795
      atom 21783
        nonmetal atom 21679
          selenium atom 3152
            selenium-77 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 21797
    subatomic particle 21783
      composite particle 21783
        hadron 21783
          baryon 21783
            nucleon 21783
              atomic nucleus 21783
                atom 21783
                  main group element atom 21700
                    p-block element atom 21700
                      chalcogen 20867
                        selenium atom 3152
                          selenium-77 atom 0
paths to the root