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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 19812
    chemical entity 19812
      molecular entity 19811
        ion 16058
          anion 14975
            monoatomic anion 9271
              monoatomic monoanion 9271
                natride 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19812
    subatomic particle 19811
      composite particle 19811
        hadron 19811
          baryon 19811
            nucleon 19811
              atomic nucleus 19811
                atom 19811
                  main group element atom 19708
                    main group molecular entity 19708
                      s-block molecular entity 19493
                        alkali metal molecular entity 10640
                          sodium molecular entity 8663
                            elemental sodium 8663
                              natride 0
paths to the root