The Collaborative International Dictionary
chrysophanic acid
Rumicin \Ru"mi*cin\, n. (Chem.) A yellow crystalline substance found in the root of yellow dock ( Rumex crispus) and identical with chrysophanic acid.
Wiktionary
chrysophanic acid
n. (context organic compound English) A dioxymethylanthraquinone found in rhubarb.
Wikipedia
Chrysophanic acid
Chrysophanic acid, also known as chrysophanol, is a fungal isolate and a natural anthraquinone with anti-cancer activity.
Usage examples of "chrysophanic acid".
Chrysarobin is a reduced quinone, and chrysophanic acid (also found in rhubarb yellow lichen, Buckthorn Berries, Rumox Eckolianus, a South African dock, etc.
The assertion has been made that the bark contains glucosides which yield on hydrolysis Chrysophanic acid, but the evidence on this point is conflicting.