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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 19730
        chemical entity 19728
          group 19690
            inorganic group 19308
              sulfo group 6114
                organosulfonic acid + 6114
    Path 2
    Term Annotations click to browse term
      CHEBI ontology 19730
        subatomic particle 19728
          composite particle 19728
            hadron 19728
              baryon 19728
                nucleon 19728
                  atomic nucleus 19728
                    atom 19728
                      main group element atom 19676
                        p-block element atom 19676
                          chalcogen 19471
                            oxygen atom 19448
                              oxygen molecular entity 19448
                                hydroxides 19241
                                  oxoacid 18615
                                    chalcogen oxoacid 11749
                                      sulfur oxoacid 11373
                                        sulfonic acid 7668
                                          sulfo group 6114
                                            organosulfonic acid + 6114
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