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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 5029
    chemical entity 5057
      atom 5048
        nonmetal atom 4981
          sulfur atom 249
            sulfur-38 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 5029
    subatomic particle 5020
      composite particle 5020
        hadron 5020
          baryon 5020
            nucleon 5020
              atomic nucleus 5048
                atom 5048
                  main group element atom 4988
                    p-block element atom 4985
                      chalcogen 4890
                        sulfur atom 249
                          sulfur-38 atom 0
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