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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:4925 term browser browse the term
Definition:A germacranolide that has formula C22H28O8.
Synonyms:related_synonym: Formula=C22H28O8;   InChI=1S/C22H28O8/c1-10-7-18(29-21(26)22(6)13(4)30-22)19-12(3)20(25)28-17(19)8-11(2)16(9-15(10)24)27-14(5)23/h7-8,13,15-19,24H,3,9H2,1-2,4-6H3/b10-7-,11-8-/t13-,15+,16+,17-,18-,19+,22-/m1/s1;   InChIKey=QGXSKKOWDFZPIV-CXDYXSGLSA-N;   SMILES=C[C@H]1O[C@@]1(C)C(=O)O[C@@H]1\\C=C(C)/[C@@H](O)C[C@H](OC(C)=O)\\C(C)=C/[C@H]2OC(=O)C(=C)[C@H]12
 xref: CAS:33853-88-2;   KEGG:C09429;   KNApSAcK:C00003268

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 860
    chemical entity 860
      atom 845
        nonmetal atom 823
          carbon atom 804
            organic molecular entity 804
              isoprenoid 97
                terpene 97
                  sesquiterpene 78
                    germacrane 0
                      germacranolide 0
                        Eupacunoxin 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 860
    subatomic particle 845
      composite particle 845
        hadron 845
          baryon 845
            nucleon 845
              atomic nucleus 845
                atom 845
                  main group element atom 834
                    p-block element atom 831
                      carbon group element atom 805
                        carbon atom 804
                          organic molecular entity 804
                            organic group 380
                              organic divalent group 378
                                organodiyl group 378
                                  carbonyl group 377
                                    carbonyl compound 377
                                      carboxylic ester 220
                                        lactone 150
                                          terpene lactone 2
                                            sesquiterpene lactone 2
                                              germacranolide 0
                                                Eupacunoxin 0
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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.