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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:87028 term browser browse the term
Definition:A water soluble mixture of different dyes extracted from various species of lichens particularly Variolaria, Lecanora and Rocella. Consists chiefly of azolitmin and erythrolitmin combined with alkalis. Used as an acid-base indicator pH 4.5 red, 8.3 blue.
Synonyms:related_synonym: Lackmus;   Tornasol;   Tournesol
 xref: CAS:1393-92-6;   Wikipedia:Litmus

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19816
    chemical entity 19816
      chemical substance 11959
        mixture 10880
          litmus 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19816
    role 19764
      application 19426
        indicator 8651
          visual indicator 4320
            colour indicator 4320
              acid-base indicator 117
                litmus 0
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