Hydroxyanthracenes are a class of natural phenolic compounds. They can be found in Cassia alataDistribution of hydroxyanthracene derivatives in Cassia alata and the factors affecting the quality of the raw material. Pharkphoom Panichayupakaranant and Niwan Intaraksa, Songklanakarin J. Sci. Technol., July-Aug. 2003, Vol. 25, No. 4, pages 497-502 (article) and Cassia senna (sennosides A, B, C and D).WHO Monographs on Selected Medicinal Plants - Volume 1, 1999, 295 pages
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