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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 494
    chemical entity 501
      atom 501
        nonmetal atom 487
          sulfur atom 191
            sulfur-38 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 494
    subatomic particle 494
      composite particle 494
        hadron 494
          baryon 494
            nucleon 494
              atomic nucleus 501
                atom 501
                  main group element atom 487
                    p-block element atom 487
                      chalcogen 445
                        sulfur atom 191
                          sulfur-38 atom 0
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