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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:62088 term browser browse the term
Definition:A pyrazole that is antiipyrine substituted at C-4 by a methyl(sulfomethyl)amino group, the sodium salt of which, metamizole sodium, was widely used as a powerful analgesic and antipyretic, but withdrawn from many markets from the 1970s due to a risk of causing risk of causing agranulocytosis.
Synonyms:exact_synonym: [(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)(methyl)amino]methanesulfonic acid
 related_synonym: (antipyrinylmethylamino)methanesulfonic acid;   Formula=C13H17N3O4S;   InChI=1S/C13H17N3O4S/c1-10-12(14(2)9-21(18,19)20)13(17)16(15(10)3)11-7-5-4-6-8-11/h4-8H,9H2,1-3H3,(H,18,19,20);   InChIKey=LVWZTYCIRDMTEY-UHFFFAOYSA-N;   N-(2,3-dimethyl-5-oxo-1-phenyl-3-pyrazolin-4-yl)-N-methylaminomethanesulfonic acid;   SMILES=CN(CS(O)(=O)=O)c1c(C)n(C)n(-c2ccccc2)c1=O;   [(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)methylamino]methanesulfonic acid;   metamizol;   metamizolum
 xref: CAS:50567-35-6;   Drug_Central:4659;   KEGG:D08188;   LINCS:LSM-5839;   Reaxys:327442
 cyclic_relationship: is_conjugate_acid_of CHEBI:62086

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Path 1
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  CHEBI ontology 19795
    role 19746
      biological role 19746
        xenobiotic 18434
          antipyrine 3
            metamizole 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19795
    subatomic particle 19794
      composite particle 19794
        hadron 19794
          baryon 19794
            nucleon 19794
              atomic nucleus 19794
                atom 19794
                  main group element atom 19693
                    p-block element atom 19693
                      carbon group element atom 19614
                        carbon atom 19604
                          organic molecular entity 19604
                            organic molecule 19545
                              organic cyclic compound 19339
                                organic heterocyclic compound 18579
                                  heteroarene 16539
                                    monocyclic heteroarene 13505
                                      azole 12710
                                        diazole 8600
                                          pyrazoles 2292
                                            pyrazolone 78
                                              antipyrine 3
                                                metamizole 0
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