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 trihydroxyanthraquinone that is that is 3,6,8-trihydroxy-9,10-anthraquinone substituted by methyl and carboxy groups at positions 1 and 2 respectively. A minor component of LAC dye together with laccaic acids A, B and C.