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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:sulfur-38 atom
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Accession:CHEBI:37985 term browser browse the term
Definition:The radioactive isotope of sulfur with relative atomic mass 37.97116 and half-life of 170.3 min.
Synonyms:related_synonym: (38)16S;   (38)S;   Formula=[38S];   InChI=1S/S/i1+6;   InChIKey=NINIDFKCEFEMDL-LZFNBGRKSA-N;   SMILES=[38S];   sulfur, isotope of mass 38;   sulfur-38;   sulphur-38
 xref: CAS:15759-21-4

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19876
    chemical entity 19905
      atom 19905
        nonmetal atom 19810
          sulfur atom 17689
            sulfur-38 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19876
    subatomic particle 19874
      composite particle 19874
        hadron 19874
          baryon 19874
            nucleon 19874
              atomic nucleus 19905
                atom 19905
                  main group element atom 19821
                    p-block element atom 19821
                      chalcogen 19570
                        sulfur atom 17689
                          sulfur-38 atom 0
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