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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:64909 term browser browse the term
Definition:Any substance that causes disturbance to organisms by chemical reaction or other activity on the molecular scale, when a sufficient quantity is absorbed by the organism.
Synonyms:related_synonym: poisonous agent;   poisonous agents;   poisonous substance;   poisonous substances;   poisons;   toxic agent;   toxic agents;   toxic substance;   toxic substances
 xref: Wikipedia:Poison

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    Path 1
    Term Annotations click to browse term
      CHEBI ontology 19908
        role 19883
          biological role 19881
            poison 18630
              2,6-dichlorobenzoquinone 0
              Ala-Eth 0
              Sirius red 4B 1
              Sirius red 4B (acid form) 0
              ammonium molybdate 0
              brilliant green 8
              brilliant green cation + 8
              cassaine 0
              diazomethane 0
              disodium hydrogenarsenate + 0
              disodium hydrogenarsenate heptahydrate 0
              hydrogen cyanide + 4779
              methylarsonous acid 0
              nephrotoxin + 11676
              neurotoxin + 18184
              osmium tetroxide 0
              potassium fluoride 0
              sodium arsenate 2453
              sodium chromate 43
              sodium molybdate (anhydrous) + 3
              sodium molybdate dihydrate 0
              sodium molybdate heptahydrate 0
              sodium molybdate tetrahydrate 0
              sodium nitrite 30
              sodium oxalate 0
              sodium selenide 4
              toxin + 15975
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