Alizarin Purine

The phenomena occurring with these oxidations were later more accurately investigated by Perlin.3 From anthraquinone in 92% sulphuric acid 90 to 96% dioxyanthraquinones and a small quantity of monoanthraquinones were obtained. Besides a- and / -monooxyanthraquinone, quinizarin, alizarin, and pur-purin could be isolated. If the anthraquinone-sulphuric acid solution is employed as cathode fluid, anthranols, anthrones, and hydroanthranols are formed. If the sulphuric-acid concentration of the anode solution is increased, there are formed sulphurated oxyanthraquinones. 

Acetic acid, [(3,5,6-trichloro-2- Alizarin Blue 3737 ribofuranosyl-6//-purin-6-one 5615... 

Ein neuer Biosyntheseweg fur Anthrachinone Der Einbau von Shikimisaure in 1,2-dihydroxyanthrachinon (Alizarin) und 1,2,4-trihydroxyanthrachinon (Pur-purin) in Rubia tinctorum L. Z. Naturforsch. 22b, 865 (1967). 

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