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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:48088 term browser browse the term
Definition:An acyclic acetylene that has formula C4H4.
Synonyms:exact_synonym: but-1-en-3-yne
 related_synonym: 1-butenyne;   3-buten-1-yne;   Formula=C4H4;   InChI=1S/C4H4/c1-3-4-2/h1,4H,2H2;   InChIKey=WFYPICNXBKQZGB-UHFFFAOYSA-N;   SMILES=C=CC#C;   monovinylacetylene;   vinyl acetylene;   vinylacetylene
 xref: Beilstein:1071193;   CAS:689-97-4

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19787
    chemical entity 19787
      molecular entity 19784
        polyatomic entity 19697
          molecule 19520
            organic molecule 19488
              acetylenic compound 5786
                enyne 26
                  butenyne 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19787
    subatomic particle 19784
      composite particle 19784
        hadron 19784
          baryon 19784
            nucleon 19784
              atomic nucleus 19784
                atom 19784
                  main group element atom 19672
                    main group molecular entity 19672
                      s-block molecular entity 19430
                        hydrogen molecular entity 19420
                          hydrides 18686
                            organic hydride 18249
                              organic fundamental parent 18249
                                hydrocarbon 17969
                                  acetylenes 32
                                    acyclic acetylene 32
                                      butenyne 0
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