Rubia tinctorum anthragallol from

Anthragallol, 1,2,3-trihydroxyanthraquinone, is fotmd as a major dye component in roots Rubia tinctorum L. and is therefore a principal constiment of madder dyes. It is designated by the Colour Index (1971) as Cl 58200. S3mthesis is from galhc acid and benzoic acid with sulfuric acid at 125°C or from phthalic anhydride and pyrogaUol with sulfuric acid at 160 C (Seuberlich, 1877 cf. Merck Index, 1996). It is found in the following forms ... 

Anthragallol-2,3-dimethyl ether is extracted from the seed of Morinda citrifolia L. and the roots of Rubia tinctorum L. Anthragalloltrimethyl ether extracted from the whole plant of Oldenlandia umbellata L. (Schweppe, 1992). 

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