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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:silicon-30 atom
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Accession:CHEBI:37976 term browser browse the term
Definition:The stable isotope of silicon with relative atomic mass 29.9737702. The least abundant (3.09 atom percent) isotope of naturally occurring silicon.
Synonyms:related_synonym: (30)14Si;   (30)Si;   Formula=[30Si];   InChI=1S/Si/i1+2;   InChIKey=XUIMIQQOPSSXEZ-NJFSPNSNSA-N;   SMILES=[30Si];   silicon-30

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19908
    chemical entity 19906
      atom 19906
        nonmetal atom 19842
          silicon atom 5747
            silicon-30 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19908
    subatomic particle 19906
      composite particle 19906
        hadron 19906
          baryon 19906
            nucleon 19906
              atomic nucleus 19906
                atom 19906
                  main group element atom 19853
                    p-block element atom 19853
                      carbon group element atom 19799
                        silicon atom 5747
                          silicon-30 atom 0
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