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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:33538 term browser browse the term
Definition:A sulfur oxoanion that has formula HO2S.
Synonyms:related_synonym: (hydroxythio)oxidanide;   Formula=HO2S;   InChI=1S/H2O2S/c1-3-2/h1-2H/p-1;   InChIKey=HRKQOINLCJTGBK-UHFFFAOYSA-M;   SMILES=[H]OS[O-]
 xref: Gmelin:323188
 cyclic_relationship: is_conjugate_acid_of CHEBI:29821;   is_conjugate_base_of CHEBI:33536

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Path 1
Term Annotations click to browse term
  CHEBI ontology 21746
    chemical entity 21744
      atom 21732
        nonmetal atom 21625
          sulfur atom 16935
            sulfur molecular entity 16935
              sulfur oxoanion 549
                hydroxidooxidosulfate(1-) 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 21746
    subatomic particle 21732
      composite particle 21732
        hadron 21732
          baryon 21732
            nucleon 21732
              atomic nucleus 21732
                atom 21732
                  main group element atom 21647
                    p-block element atom 21647
                      chalcogen 20779
                        oxygen atom 20756
                          oxygen molecular entity 20756
                            oxide 12319
                              oxoanion 9259
                                chalcogen oxoanion 550
                                  sulfur oxoanion 549
                                    hydroxidooxidosulfate(1-) 0
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