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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:28263 term browser browse the term
Definition:A member of the class of chlorohydroquinones that is hydroquinone in which three of the four hydrogens attached to the benzene ring have been replaced by chlorines.
Synonyms:related_synonym: 2,3,5-trichloro-p-hydroquinone;   2,3,5-trichlorohydroquinone;   2,3,6-Trichlorohydroquinone;   2,3,6-trichloro-p-hydroquinone;   Formula=C6H3Cl3O2;   InChI=1S/C6H3Cl3O2/c7-2-1-3(10)4(8)5(9)6(2)11/h1,10-11H;   InChIKey=ZIIRLFNUZROIBX-UHFFFAOYSA-N;   SMILES=C=1(C(=C(C=C(C1Cl)O)Cl)O)Cl;   trichlorohydroquinone
 alt_id: CHEBI:19300;   CHEBI:27101;   CHEBI:867
 xref: CAS:608-94-6;   KEGG:C07099;   KNApSAcK:C00007486;   MetaCyc:236-TRICHLOROHYDROQUINONE;   PMID:1459949;   PMID:1731793;   PMID:17956123;   PMID:18275157;   UM-BBD_compID:c0328
 cyclic_relationship: is_conjugate_acid_of CHEBI:141023

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19883
    role 19833
      chemical role 19351
        antioxidant 14255
          hydroquinone 878
            chlorohydroquinones 10
              2,3,5-trichlorobenzene-1,4-diol 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19883
    subatomic particle 19881
      composite particle 19881
        hadron 19881
          baryon 19881
            nucleon 19881
              atomic nucleus 19881
                atom 19881
                  main group element atom 19771
                    p-block element atom 19771
                      carbon group element atom 19679
                        carbon atom 19668
                          organic molecular entity 19668
                            organic molecule 19596
                              organic cyclic compound 19407
                                organic aromatic compound 19233
                                  phenols 18178
                                    benzenediols 6086
                                      benzenediol 1045
                                        hydroquinone 878
                                          chlorohydroquinones 10
                                            2,3,5-trichlorobenzene-1,4-diol 0
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