Chrysophanic acid or methylanthrachinone, also known by the names of chrysophanol or rumicin, is a quinone.
Chrysophanic acid is an organic compound which is mainly contained in Chinese rhubarb (Rheum palmatum L., 1759) and other rhubarb species and in cascara sagrada (Rhamnus purshiana DC.), In Aloe arborescens (Aloe arborescens Mill., 1768 ) and in the frizzy Romice (Rumex crispus L.).
Chrysophane acid is also obtained by oxidation of chrysarobin.
Chrysophane acid appears as a crystalline powder, golden yellow in color, odorless, insoluble in chloroform, benzene and ether.
This organic compound has purgative and antiparasitic properties. Together with the synthetic bismuth chrysophanate derivative, it has been used in the past in the treatment of some skin diseases.
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