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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:chemical substance
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Accession:CHEBI:59999 term browser browse the term
Definition:A chemical substance is a portion of matter of constant composition, composed of molecular entities of the same type or of different types.
Synonyms:related_synonym: Chemische Substanz

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  CHEBI ontology 19810
    chemical entity 19810
      chemical substance 11964
        biogenic substance + 0
        mineral + 3903
        mixture + 10886
        pure substance 0
        wax + 0
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