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Dihydroxyanthraquinones
A dihydroxyanthraquinone is any of several isomeric organic compounds with formula , formally derived from 9,10-anthraquinone by replacing two hydrogen atoms by hydroxyl groups. Dihyroxyantraquinones have been studied since the early 1900s, and include some compounds of historical and current importance. The isomers differ in the position of the hydroxyl groups, and of the carbonyl oxygens (=O) of the underlying anthraquinone. Isomers From 9,10-anthraquinone The unqualified term "dihydroxyanthraquinone" usually means a hydroxy derivative of 9,10-anthraquinone. The dihydroxy-9,10-anthraquinone functional group In organic chemistry, a functional group is any substituent or moiety (chemistry), moiety in a molecule that causes the molecule's characteristic chemical reactions. The same functional group will undergo the same or similar chemical reactions r ... occurs widely in natural products, and is an important feature of the anthracycline antitumour antibiotics. In partic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1,2-Dihydroxyanthraquinone
Alizarin (also known as 1,2-dihydroxyanthraquinone, Mordant Red 11, Colour Index International, C.I. 58000, and Turkey Red) is an organic compound with formula that has been used throughout history as a red dye, principally for dyeing textile fabrics. Historically it was derived from the roots of plants of the Rubia, madder genus.The primary madder species from which alizarin historically has been obtained is ''Rubia tinctorum''. See also In 1869, it became the first natural dye to be produced synthetically. Alizarin is the main ingredient for the manufacture of the madder Lake pigment, lake pigments known to painters as rose madder and Alizarin crimson (color), alizarin crimson. Alizarin in the most common usage of the term has a deep red color, but the term is also part of the name for several related non-red dyes, such as Alizarine Cyanine Green and Alizarine Brilliant Blue. A use of alizarin in modern times is as a staining agent in biological research because it stains fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |