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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:29102 term browser browse the term
Definition:An elemental sodium that has formula Na.
Synonyms:exact_synonym: natride(-I);   natride(1-)
 related_synonym: Formula=Na;   InChI=1S/Na/q-1;   InChIKey=GVGHZEYNQYAORP-UHFFFAOYSA-N;   Na(-);   SMILES=[Na-];   sodium anion
 xref: CAS:19181-13-6;   Gmelin:14914

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19659
    chemical entity 19658
      molecular entity 19658
        ion 16429
          anion 15622
            monoatomic anion 9334
              monoatomic monoanion 9334
                natride 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19659
    subatomic particle 19658
      composite particle 19658
        hadron 19658
          baryon 19658
            nucleon 19658
              atomic nucleus 19700
                atom 19658
                  main group element atom 19607
                    main group molecular entity 19649
                      s-block molecular entity 19457
                        alkali metal molecular entity 11928
                          sodium molecular entity 10164
                            elemental sodium 10164
                              natride 0
paths to the root