A member of the class of hydroxyanthraquinones carrying three hydroxy substituents.
| Member | Definition | Role |
|---|
| 1,3,6-trihydroxy-2-methyl-9,10-anthraquinone | A trihydroxyanthraquinone that is 9,10-anthraquinone substituted by hydroxy groups at positions 1, 3 and 6 and a methyl group at position 2. It has been isolated from the roots of Rubia yunnanensis. | 1,3,6-trihydroxy-2-methyl-9,10-anthraquinone |
| 1,3,6-trihydroxy-8-n-propylanthraquinone | | R1128A |
| 1,3,8-trihydroxy-6-hydroxymethylanthraquinone | | Citreorosein |
| 4,5,7-trihydroxy-9,10-dioxo-2-anthracenecarboxylic acid | | 4,5,7-trihydroxy-9,10-dioxo-2-anthracenecarboxylic acid |
| aurantio-obtusin | A trihydroxyanthraquinone that is 1,3,7-trihydroxy-9,10-anthraquinone which is by methoxy groups at positions 2 and 8, and by a methyl group at position 6. | aurantio-obtusin |
| emodin | A trihydroxyanthraquinone that is 9,10-anthraquinone which is substituted by hydroxy groups at positions 1, 3, and 8 and by a methyl group at position 6. It is present in the roots and barks of numerous plants (particularly rhubarb and buckthorn), moulds, and lichens. It is an active ingredient of various Chinese herbs. | emodin |
| endocrocin | A trihydroxyanthraquinone that is 9,10-anthraquinone which is substituted by a carboxy group at position 2, a methyl group at position 3, and hydroxy groups at positions 1, 6, and 8. | endocrocin |
| funiculosin (anthraquinone) | | Islandicin |
| purpurin | A trihydroxyanthraquinone derived from anthracene by substitution with oxo groups at C-9 and C-10 and with hydroxy groups at C-1, C-2 and C-4. | purpurin |
| skyrin | | skyrin |