1,3-Dihydroxyanthraquinone aka purpuroxanthin or xanthopurpurin
1,3-Dihydroxyanthraquinone, also called purpuroxanthin or xanthopurpurin, is an organic compound with formula C14H8O4 that occurs in the plant Rubia cordifolia (Indian mad
Rubia
Rubia is the type genus of the Rubiaceae family of flowering plants, which also contains coffee. It contains around 80 species of perennial scrambling or climbing herbs an