1070 Risultati per: "SIGMA ALDRICH MICROSCOPY"

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N-(4-Amino-2,5-diethoxyphenyl)benzamide, (4'-Amino-2',5'-diethoxybenzanilide; Azoic Diazo No. 20; Fast blue BB)

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Redox indicator. Blue fluorescence until oxidized to ethidium. Dihydroethidium has been used as a superoxide probe in bovine pulmonary artery endothelial cell (BPAEC).

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Rhodamine 123 is useful as a laser dye and to have selective cell growth effects. It has also been used to measure mitochondrial membrane potential.

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Sudan III, Sigma-Aldrich®

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Leucomalachite green has been used as a reagent in presumptive tests which are used to detect invisible blood stains.

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Cresyl Violet perchlorate is suitable as a laser dye.

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Quinaldine red has been used as a fluorescent probe for α1-acid glycoprotein (AAG). It is also used a diagnostic assay manufacturing, hematology, histology.

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Crystal violet has been used to determine cell viability. It has been used in the staining of cells for the quantification of cellular migration.

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Phloroglucinol (phlo) is a phenol derivative that shows a cytoprotective effect from oxidative damage by enhancing the activity of cellular catalase. It can also be used to prepare synthetic analogs of A-type proanthocyanidins (PACs) such as 2,8-dioxabicyclo nonane derivatives by reacting with the corresponding flavylium salts. Phlo can react with benzaldehyde derivatives to form phloroglucinol-based microporous polymeric organic frameworks (phlo-POF) with potential applications in ion exchange and gas adsorption. Phloroglucinol is an antispasmodic and a derivative of phenol.

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o-Tolidine is a diacidic dye which is sparingly soluble in water and easily soluble in ether and alcohol. On exposure to chlorine or bromine vapors, it forms an intense blue color. This forms the basis for detection of chlorine, nitrates and hydrogen peroxide in air or water. It turns yellow on reacting with free chlorine. o-Tolidine easily forms acid salts.

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Solvent Blue 38 is a phthalocyanine stain, used for staining myelin, neurons and glial fibres.

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In living mice, acriflavine hydrochloride has been used in the confocal laser endomicroscopy to check the crypt structure in mucosa. It has also been used in Neurospora strain selection by checking the acriflavine resistance.

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2-Amino-5,6-dimethylbenzimidazole, Sigma-Aldrich®

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Chlorazol Black has been used to monitor the infection of mycorrhizal Allium porrum in plant roots. It has also been used for the staining of copepods.

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Methyl violet for microscopy (Bact., Bot., Hist.), indicator (pH 0.1 - 2.0), mixture of polymethylated pararosaniline hydrochlorides.

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Loefflers Methylene Blue stain is used for the identification of diphteria bacilli, since it differentiates the deeply staining metachromatic granules from the pale blue-staining cytoplasm.

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2,4-Dimethoxytoluene, Sigma-Aldrich®

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3-Ethyl-2-methylbenzothiazolium iodide, Sigma-Aldrich®

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Verde Fast, Sigma-Aldrich®

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Bromocresol purple sodium salt, Sigma-Aldrich®

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1,2,3,4-Tetrahydro-2,2,4,7-tetramethylquinoline,97%

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To be used with SIAL 69571 Ren HY 956 (Hardener for Epoxy Embedding Medium)

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Produces highly insoluble dark green stain in histochemical studies.

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Fluorescent Brightener (Calcofluor White M2R) is used for the staining of fungi and as a viability stain. Industrial uses include use as a fluorescent brightening agent for cellulose and polyamide fabrics, paper and in detergents and soaps.

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Bromophenol blue has been used in the sample buffer prepared for western blotting. A tracking dye for nucleic acid or protein electrophoresis in agarose or polyacrylamide gels.

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Quinoline Yellow, Mixture of the mono- and disulfonic acids of Quinoline Yellow (Acid Yellow 3)

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2',7'-Dichlorofluorescein, Sigma-Aldrich®

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Cell impermeable fluorescent probe for Ca2+.

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This material has a structure similar to Granular Blue (CAS No. 71431-29-3). It has been referred to in some literature as Granular Blue, a fluorescent neuronal tracer.

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Phenol Red sodium salt is widely used as a pH indicator. At a pH of 6,4 and below, phenol red solution will have a yellow colour. At a pH of 8,2 and above, it will have a red colour. It is commonly used in culture media to detect neutral to acidic pH changes.