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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:29392 term browser browse the term
Definition:An inorganic disulfide that has formula O2S2.
Synonyms:exact_synonym: bis(oxidosulfate)(S--S)(2-);   disulfane-1,2-bis(olate)
 related_synonym: Formula=O2S2;   InChI=1S/H2O2S2/c1-3-4-2/h1-2H/p-2;   InChIKey=JARODAOQOSWMRF-UHFFFAOYSA-L;   OSSO(2-);   SMILES=[O-]SS[O-]
 xref: Gmelin:239573
 cyclic_relationship: is_conjugate_base_of CHEBI:35922

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  CHEBI ontology 909
    chemical entity 909
      molecular entity 907
        inorganic molecular entity 754
          inorganic oxide 27
            sulfur oxide 1
              disulfanediolate(2-) 0
Path 2
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  CHEBI ontology 909
    subatomic particle 894
      composite particle 894
        hadron 894
          baryon 894
            nucleon 894
              atomic nucleus 894
                atom 894
                  main group element atom 863
                    p-block element atom 860
                      chalcogen 823
                        oxygen atom 768
                          oxygen molecular entity 768
                            oxide 72
                              oxoanion 40
                                chalcogen oxoanion 1
                                  sulfur oxoanion 1
                                    disulfanediolate(2-) 0
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