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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:35104 term browser browse the term
Definition:A strontium cation that has formula Sr.
Synonyms:exact_synonym: strontium(2+) ion;   strontium(II) cation
 related_synonym: Formula=Sr;   InChI=1S/Sr/q+2;   InChIKey=PWYYWQHXAPXYMF-UHFFFAOYSA-N;   SMILES=[Sr++];   STRONTIUM ION;   Sr(2+);   Sr2+;   Strontium
 alt_id: CHEBI:33514;   CHEBI:34982;   CHEBI:49891
 xref: CAS:22537-39-9;   Gmelin:6868;   KEGG:C13884
 xref_mesh: MESH:D013324
 xref: PDBeChem:SR

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19770
    role 19720
      biological role 19720
        biochemical role 19310
          cofactor 15544
            strontium(2+) 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19770
    subatomic particle 19768
      composite particle 19768
        hadron 19768
          baryon 19768
            nucleon 19768
              atomic nucleus 19768
                atom 19768
                  main group element atom 19662
                    main group molecular entity 19662
                      s-block molecular entity 19429
                        alkaline earth molecular entity 671
                          strontium molecular entity 1
                            elemental strontium 0
                              strontium ion 0
                                strontium cation 0
                                  strontium(2+) 0
paths to the root