Quinizarin


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Qui`niz´a`rin


1.(Chem.) A yellow crystalline substance produced artificially. It is isomeric with alizarin.
References in periodicals archive ?
Effects of new quinizarin derivatives on both HCV NS5B RNA polymerase and HIV-1 reverse transcriptase associated ribonuclease H activities.
Minor's starch iodine test or the older quinizarin test can be useful to guide botulinum toxin A therapy, said Dr.
It has been found that Ti[O.sub.2] adsorbed almost only cationic azo dyes, except for the anionic Quinizarin with an adsorption efficiency of 21.8% [227, 228].
The anthraquinone, quinizarin, is the usual starting material for the syntheses of other anthraquinones given its availability, affordability, and adaptability to a variety of chemical procedures, in addition to the fact that these products are readily purified chromatographically [19-21].
1,4-Anthraquinone was prepared by quinizarin reduction according to established methods [20].
The 9-hydroxy and 9-methoxy derivatives of quinizarin were prepared as previously described [26].
NADPH, [AcPyADP.sup.+], and quinizarin (96% pure) were from Sigma-Aldrich, St.
The abbreviations used for the anthraquinones evaluated are as follows: the parent compound quinizarin, QZ; 1,4-anthraquinone, AQ; 2-hydroxy-1,4-anthraquinone, 2OH; 2-methoxy-1,4-anthraquinone, 2MeO; 9-hydroxy-1,4-anthraquinone, 9OH; 9-methoxy-1,4-anthraquinone, 9MeO.
Bigelow, "A study of the preparation of quinizarin," Journal of the American Chemical Society, vol.