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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-33 atom
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Accession:CHEBI:37980 term browser browse the term
Definition:The stable isotope of sulfur with relative atomic mass 32.9714585, 0.75 atom percent natural abundance, and nuclear spin (3)/2.
Synonyms:related_synonym: (33)16S;   (33)S;   Formula=[33S];   InChI=1S/S/i1+1;   InChIKey=NINIDFKCEFEMDL-OUBTZVSYSA-N;   SMILES=[33S];   sulfur, isotope of mass 33;   sulfur-33;   sulphur-33
 xref: CAS:14257-58-0

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19787
    chemical entity 19787
      atom 19784
        nonmetal atom 19659
          sulfur atom 16256
            sulfur-33 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19787
    subatomic particle 19784
      composite particle 19784
        hadron 19784
          baryon 19784
            nucleon 19784
              atomic nucleus 19784
                atom 19784
                  main group element atom 19672
                    p-block element atom 19672
                      chalcogen 19362
                        sulfur atom 16256
                          sulfur-33 atom 0
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