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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.

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Accession:CHEBI:29101 term browser browse the term
Definition:A monoatomic monocation obtained from sodium.
Synonyms:exact_synonym: sodium cation;   sodium(1+) ion;   sodium(I) cation
 related_synonym: Formula=Na;   InChI=1S/Na/q+1;   InChIKey=FKNQFGJONOIPTF-UHFFFAOYSA-N;   Na+;   SMILES=[Na+];   SODIUM ION
 alt_id: CHEBI:26717;   CHEBI:49766;   CHEBI:9175
 xref: CAS:17341-25-2;   Gmelin:15196;   KEGG:C01330;   PDBeChem:NA

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Your selection has 11323 annotated objects. The maximum number of objects that can be shown is 2000. The list is too large to display.

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    Path 1
    Term Annotations click to browse term
      CHEBI ontology 19844
        role 19820
          biological role 19818
            biochemical role 19525
              cofactor 16179
                sodium(1+) 11323
                  sodium salt + 11323
    Path 2
    Term Annotations click to browse term
      CHEBI ontology 19844
        subatomic particle 19842
          composite particle 19842
            hadron 19842
              baryon 19842
                nucleon 19809
                  atomic nucleus 19842
                    atom 19842
                      main group element atom 19792
                        main group molecular entity 19792
                          s-block molecular entity 19626
                            alkali metal molecular entity 12812
                              sodium molecular entity 11323
                                elemental sodium 11323
                                  sodium(1+) 11323
                                    sodium salt + 11323
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