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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:145276 term browser browse the term
Definition:A methyl propenyl ketone in which the double bond has (E)-configuration. It is a key odorant responsible for the chestnut-like aroma in green tea.
Synonyms:related_synonym: (3E)-penten-2-one;   (E)-3-penten-2-one;   (E)-pent-3-en-2-one;   Formula=C5H8O;   InChI=1S/C5H8O/c1-3-4-5(2)6/h3-4H,1-2H3/b4-3+;   InChIKey=LABTWGUMFABVFG-ONEGZZNKSA-N;   SMILES=O=C(/C=C/C)C;   trans-3-penten-2-one
 xref: AGR:IND606344169;   CAS:3102-33-8;   LIPID_MAPS_instance:LMFA12000028;   PMID:25619643;   PMID:29735103;   PMID:30255657

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Path 1
Term Annotations click to browse term
  CHEBI ontology 20050
    role 20001
      application 19737
        food additive 15211
          flavouring agent 4155
            (3E)-pent-3-en-2-one 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 20050
    subatomic particle 20048
      composite particle 20048
        hadron 20048
          baryon 20048
            nucleon 20048
              atomic nucleus 20048
                atom 20048
                  main group element atom 19948
                    p-block element atom 19948
                      carbon group element atom 19872
                        carbon atom 19863
                          organic molecular entity 19863
                            organic group 18937
                              organic divalent group 18922
                                organodiyl group 18922
                                  carbonyl group 18872
                                    carbonyl compound 18872
                                      ketone 17097
                                        alpha,beta-unsaturated ketone 9932
                                          enone 9932
                                            methyl propenyl ketone 0
                                              (3E)-pent-3-en-2-one 0
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