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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 19821
    chemical entity 19821
      atom 19819
        nonmetal atom 19707
          sulfur atom 16403
            sulfur-38 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19821
    subatomic particle 19819
      composite particle 19819
        hadron 19819
          baryon 19819
            nucleon 19819
              atomic nucleus 19819
                atom 19819
                  main group element atom 19716
                    p-block element atom 19716
                      chalcogen 19469
                        sulfur atom 16403
                          sulfur-38 atom 0
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