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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:30120 term browser browse the term
Definition:A monoatomic chlorine that has formula Cl.
Synonyms:exact_synonym: chlorine(1+) ion;   chlorine(I) cation
 related_synonym: Chlorine cation;   Cl;   Formula=Cl;   InChI=1S/Cl/q+1;   InChIKey=KVPIFZRDXDYGBA-UHFFFAOYSA-N;   SMILES=[Cl+]
 xref: CAS:24203-47-2;   Gmelin:15185

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19781
    chemical entity 19781
      molecular entity 19779
        ion 15942
          monoatomic ion 15182
            monoatomic cation 14017
              monoatomic monocation 10559
                chlorine(1+) 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19781
    subatomic particle 19779
      composite particle 19779
        hadron 19779
          baryon 19779
            nucleon 19779
              atomic nucleus 19779
                atom 19779
                  main group element atom 19669
                    p-block element atom 19669
                      halogen 18103
                        halogen molecular entity 18103
                          chlorine molecular entity 17921
                            elemental chlorine 8455
                              monoatomic chlorine 8439
                                chlorine(1+) 0
paths to the root