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Anthrapurpurin

Anthrapurpurin is a purple dye used in histology for the detection of calcium.

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Anthraquinone

Anthraquinone is an aromatic organic compound. This compound is an important member of the quinone family. It is a building block of many dyes and is industrially used in bleaching pulp for papermaking. A large industrial application of anthraquinones is for the production of hydrogen peroxide. Derivatives of 9,10-anthraquinone include many important drugs.

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Anthraquinone Dye

Anthraquinone Dyes are group of organic dyes having molecular structures based upon that of anthraquinone.It contain sulfonic acid groups that render them soluble in water and substantive for wool and silk.It is also useful nucleotide-specific ligands for the purification of proteins by affinity techniques,injection moldings.

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Antimony Pentachloride

Antimony pentachloride is a chemical compound. It is used in analytical testing for caesium and alkaloids, for dyeing, and as an intermediate in chemical synthesis. It is also a strong oxidizing agent.

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Arkon M 115

Arkon M 115 is used as a hot-melt adhesives, pressure sensitive adhesives, sealants.

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Arsenazo III

Arsenazo III is a metallochrome indicator that changes color when complexed to the calcium ion under physiological conditions. It is used to measure local calcium ion concentrations in vivo.

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Arsenic Pentasulfide

Arsenic Pentasulfide is used as a pigment and as a light filter in thin sheets.

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Auramine O

Auramine O is a diarylmethane dye used as a fluorescent stain. It can be used to stain acid-fast bacteria, where it binds to the mycolic acid in its cell wall, in a way similar to Ziehl-Neelsen stain. It can also be used as a fluorescent version of Schiff reagent. Auramine O can be used together with Rhodamine B as the Truant auramine-rhodamine stain for Mycobacterium tuberculosis. It can be also used as an antiseptic agent.

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Aurin

Aurin is an organic compound, forming yellowish or deep-red crystals with greenish metallic luster. It is soluble in strong acids to form yellow solution, or in aqueous alkalis to form carmine red solutions. Due to this behaviour it can be used as pH indicator with pH transition range 5.0 - 6.8. It used as intermediate in manufacturing of dyes.

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Aurintricarboxylic Acid

Aurintricarboxylic acid is a form of dye that is used to inhibit protein biosynthesis in its initial stages. Nominally, it is used in biological experiments as a protein inhibitor, and as an ammonium salt it is used as a reagent to estimate the aluminium in water, biological tissue, and foods.

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