The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at http://www.ebi.ac.uk/chebi/. The data is made available under the Creative Commons License (CC BY 3.0, http://creativecommons.org/licenses/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.
A member of the class of xanthones that is methyl (1S)-2,9-dihydro-1H-xanthene-1-carboxylate substituted by hydroxy groups at positions 2 and 8, a hydroxymethyl group at position 6 and an oxo group at position 9. It has been isolated from the sea fan derived fungus Aspergillus sydowii.