1070 Risultati per: "SIGMA ALDRICH MICROSCOPY"

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Spirochetes TISSUE-TROL™ Control Slides from rabbit testicle tissue containing spirochetes (Treponema pallidum), TISSUE-TROL™

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Histology slides with paraffin embedded section of human skin containing melanin.

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Intended for heat-induced antigen retrieval on formalin-fixed paraffin-embedded (FFPE) tissue sections prior to application of antibodies in immunohistochemistry (IHC). Improves accessibility of antibodies to tissue antigens.

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Sudan IV is a hydrophobic azo dye. It stains triglycerides and imparts an intense red colour. The dye does not stain lipid droplets or phospholipids. It is also used a diagnostic assay manufacturing, hematology, histology.

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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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Rhodamine 6G has been used as a leukocyte marker to study the interaction between leukocytes and the vascular endothelium. It has also been used to label platelets.

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

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4,7-Dihydroxy-1,10-phenanthroline, Dye content ≥30 % (1,10-Phenanthroline-4,7-diol)

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General purpose nuclear stain, progressive type. Used with hematoxylin and eosin staining.

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Nile Blue A has been used for the staining of eggs before transferring them to the hosts. It has been used for the staining of cells.

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1,1'-Dioctadecyl-4,4'-bipyridinium dibromide,97% (Octadecyl viologen dibromide)

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Crystal Ponceau 6R has been used in the MSB (martius yellow–crystal scarlet–methyl blue) staining procedure for the staining of collagen fibers and erythrocytes.

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S-Ethylisothiouronium bromide, Sigma-Aldrich®

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Direct Red 80 (C.I. 35780) is an extremely hydrophilic, very large tetrakisazo hexasulfonated anionic dye that has a large, planar aromatic system.It is also known as Sirius red F3B, chlorantine fast red 7BLN or 5BRL, durazol brilliant red B, pontamine fast red 7BNL, and sirius fast red.

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Cresyl Violet perchlorate is suitable as a laser dye.

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4-(4-Nitrophenylazo) resorcinol, also known as azo violet or magneson I, is a red colored powder. It functions as a spot test reagent and forms blue lake on reaction with Mg(OH)₂ in alkaline solution. It is mainly used for determining the presence of magnesium in the solution. 4-(4-Nitrophenylazo)resorcinol is a pH indicator.

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Azure A eosinate, powder, crystals or chunks, Sigma-Aldrich®

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4-(2-[6-(Dioctylamino)-2-naphthalenyl]ethenyl)-1-(3-sulfopropyl)pyridinium inner salt. ≥95% (HPLC), solid (Di-8-ANEPPS)

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

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Chromeazurol S has been used to evaluate siderophore production by rhizosphere bacteria.

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Fluoresceinamine, isomer I has been used as a probe in immobilization and is used to determine its ability to potentiate the antiviral activity of poly r (A-U).

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6-Aminofluorescein has been demonstrated to be useful fluorescent labeling reagent for fullerene-based liposome nanostructures termed 'buckysomes'. 6-aminofluorescein dissolved in 0,1 N NaOH can be quantified from a maximum absorbance at 490 nm. Decarboxylated 6-aminofluorescein dissolved 6 N HCl (prepare by constant boiling at 110 °C for 24 h) can be quantified from a maximum absorbance at 454 nm. Aldehyde groups are formed by oxidateive damage to proteins, which can be detected by conjugation to decarboxylated 6-aminofluorescein. 6-Aminofluorescein has been used to determine its ability to potentiate the antiviral activity of poly r (A-U).

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

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Nile blue chloride has been used to stain non-aqueous phase in fluorescence microscopy studies.

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Schiff base which can be converted to amino alcohols and amino esters.

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The combination of azure A and silver staining is used for the quantification of glycosaminoglycans in agarose gels. It is also used for the staining of chromosomes in the nucleus. Azure A is a main component of the azure B/polychromed methylene blue-eosin stains family, also referred to as the Romanowsky stain. Azure A is a basic cationic dye.

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Certified for use as a constituent of MacNeal′s tetrachrome stain for blood.

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Arsenazo III has been used as a color forming reagent to determine uranium concentration.

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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.