"SIGMA ALDRICH MICROSCOPY"

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Fat Brown B, (Solvent red 3)

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Eosin Y, also known as Eosin yellowish is a widely used xanthene dye. It is a counterstain that is used to distinguish between various connective tissue fibers and matrices, and the cytoplasm of different types of cells. Eosin in combination with hematoxylin is useful to demonstrate the general histological architecture of a tissue.

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Ethyl Violet,cationic triarylmethane dye (Basic violet 4; Ethyl purple 6B)

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Sulforhodamine 101 is a red fluorescent dye. It is water-soluble, amphoteric rhodamine.

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Synonyms: 4-Hydroxy-3-[2-hydroxy-3-(2,4-dimethylphenylaminocarbonyl)-1-naphthylazobenzenesulfonic acid sodium salt; Magonsulfonate.

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1-Imino-4-(1-(4-aminophenyl)-1-(4-amino-3-methylphenyl)methyliden)-2,5-cyclohexadien HCl, Sigma-Aldrich®

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1,4-Bis(methylamino)-9,10-anthraquinone 97% (dye content), Sigma-Aldrich®

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Citrate buffer, antigen retriever has been used as a heat-induced antigen retriever on formalin-fixed paraffin-embedded (FFPE) tissue sections prior to application of antibodies or DNA fluorescent in situ hybridization.

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Naphthol blue black (NBB) is an textile diazo dye, with high photo- and thermal-stability. Photoelectrochemical degradation of this dye yields colorless quinone as end product. Pure grade of NBB is generally used for dyeing foodstuffs, drugs and cosmetics. It is also used as a protein stain in chromatography and electrophoresis and as a biological stain. Commercial grade of NBB is a widely used textile dye. It is used in dyeing wool, nylon, silk and in textile printing. In addition, it is also employed for colouring of soaps, anodised aluminum and casein, wood stains and writing ink preparation.

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Acridine orange is a metachromatic dye which can stain DNA, RNA and acid glycosaminoglycans. At low concentrations, it intercalates into DNA and precipitates RNA. However, at high concentrations it denatures and precipitates both RNA and DNA. Acridine orange is also used to analyse autophagy. It enters into acidic organelles in a pH-dependent manner. At neutral pH, acridine orange gives a green fluorescence and in acidic conditions, it accumulates in acidic organelles giving a bright red fluorescence.

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4-(Phenylazo)diphenylamine ≥97%, Sigma-Aldrich®

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Erythrosin gul, Sigma-Aldrich®

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4-Nitrobenzenediazonium tetrafluoroborate has been used in ellipsometry. It has also been used for surface modification of carbon nanotubes (CNTs).

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Demecolcine has been used as a microtubule depolymerizing agent. It has also been used to inhibit mitotic division.

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Sudan I is a lysochrome, a diazo-conjugate dye, used as an industrial dye, added to products such as waxes, oils, petrol, solvents and polishes. Sudan I is a category three carcinogen previously, now banned, used to colour certain foodstuffs. It can be used as a diagnostic assay manufacturing, hematology, histology.

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Orcinol is a small-molecule natural phenol involved in the production of a dye called orcein used for the staining of cells and chromosomes. Orcinol monohydrate is usually used to prepare a colorimetric reagent known as Bial's reagent for the determination of RNA, DNA, and hexoses.