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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:2-hydroxy-4-(2-oxo-1,3-dihydro-2H-inden-1-ylidene) but-2-enoic acid
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Accession:CHEBI:19609 term browser browse the term
Definition:A 2-hydroxy monocarboxylic acid that has formula C13H10O4.
Synonyms:related_synonym: Formula=C13H10O4;   InChI=1S/C13H10O4/c14-11(13(16)17)6-5-10-9-4-2-1-3-8(9)7-12(10)15/h1-6,14H,7H2,(H,16,17);   InChIKey=XWPYRLHJCKHRRG-UHFFFAOYSA-N;   SMILES=[H]C(C([H])=C1C(=O)Cc2ccccc12)=C(O)C(O)=O
 xref: UM-BBD_compID:c0400

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Term Annotations click to browse term
  CHEBI ontology 19771
    chemical entity 19771
      molecular entity 19770
        polyatomic entity 19688
          heteroatomic molecular entity 19619
            hydroxides 19076
              organic hydroxy compound 18659
                hydroxy carboxylic acid 3617
                  hydroxy monocarboxylic acid 3617
                    2-hydroxy monocarboxylic acid 2919
                      2-hydroxy-4-(2-oxo-1,3-dihydro-2H-inden-1-ylidene) but-2-enoic acid 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19771
    subatomic particle 19770
      composite particle 19770
        hadron 19770
          baryon 19770
            nucleon 19770
              atomic nucleus 19770
                atom 19770
                  main group element atom 19658
                    p-block element atom 19658
                      carbon group element atom 19574
                        carbon atom 19564
                          organic molecular entity 19564
                            organic group 18599
                              organic divalent group 18590
                                organodiyl group 18590
                                  carbonyl group 18505
                                    carbonyl compound 18505
                                      carboxylic acid 18157
                                        monocarboxylic acid 17530
                                          fatty acid 16014
                                            unsaturated fatty acid 949
                                              monounsaturated fatty acid 449
                                                butenoic acid 31
                                                  2-butenoic acid 31
                                                    2-hydroxy-4-(2-oxo-1,3-dihydro-2H-inden-1-ylidene) but-2-enoic acid 0
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