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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:32993 term browser browse the term
Definition:An uranium cation that has formula U.
Synonyms:exact_synonym: uranium(2+) ion;   uranium(II) cation
 related_synonym: Formula=U;   InChI=1S/U/q+2;   InChIKey=APTCBRLTBRHWIW-UHFFFAOYSA-N;   SMILES=[U++];   U(2+)
 xref: Gmelin:203187

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Path 1
Term Annotations click to browse term
  CHEBI ontology 242
    chemical entity 242
      molecular entity 242
        ion 26
          cation 22
            monoatomic cation 10
              monoatomic dication 0
                uranium(2+) 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 242
    subatomic particle 242
      composite particle 242
        hadron 242
          baryon 242
            nucleon 242
              atomic nucleus 242
                atom 242
                  metal atom 32
                    transition element atom 15
                      transition element molecular entity 13
                        f-block molecular entity 0
                          actinoid molecular entity 0
                            uranium molecular entity 0
                              elemental uranium 0
                                monoatomic uranium 0
                                  uranium cation 0
                                    uranium(2+) 0
paths to the root