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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.

Term:sulfo group
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Accession:CHEBI:29922 term browser browse the term
Synonyms:exact_synonym: hydroxydioxo-lambda(6)-sulfanyl;   hydroxysulfonyl;   sulfo
 related_synonym: -S(O)2(OH);   Formula=HO3S;   SMILES=S(=O)(O)(*)=O
 xref: PDBeChem:SFO

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    Path 1
    Term Annotations click to browse term
      CHEBI ontology 19823
        chemical entity 19823
          group 19744
            inorganic group 19267
              sulfo group 5767
                organosulfonic acid + 5767
    Path 2
    Term Annotations click to browse term
      CHEBI ontology 19823
        subatomic particle 19821
          composite particle 19821
            hadron 19821
              baryon 19821
                nucleon 19821
                  atomic nucleus 19821
                    atom 19821
                      main group element atom 19720
                        p-block element atom 19720
                          chalcogen 19471
                            oxygen atom 19447
                              oxygen molecular entity 19447
                                hydroxides 19175
                                  oxoacid 18500
                                    chalcogen oxoacid 11499
                                      sulfur oxoacid 11107
                                        sulfonic acid 7366
                                          sulfo group 5767
                                            organosulfonic acid + 5767
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