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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-34 atom
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Accession:CHEBI:37981 term browser browse the term
Definition:The stable isotope of sulfur with relative atomic mass 33.9678668 and 4.21 atom percent natural abundance.
Synonyms:related_synonym: (34)16S;   (34)S;   Formula=[34S];   InChI=1S/S/i1+2;   InChIKey=NINIDFKCEFEMDL-NJFSPNSNSA-N;   SMILES=[34S];   sulfur, isotope of mass 34;   sulfur-34;   sulphur-34
 xref: CAS:13965-97-4

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19808
    chemical entity 19808
      atom 19807
        nonmetal atom 19694
          sulfur atom 16395
            sulfur-34 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19808
    subatomic particle 19807
      composite particle 19807
        hadron 19807
          baryon 19807
            nucleon 19807
              atomic nucleus 19807
                atom 19807
                  main group element atom 19704
                    p-block element atom 19704
                      chalcogen 19456
                        sulfur atom 16395
                          sulfur-34 atom 0
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