1071 Results for: "SIGMA ALDRICH MICROSCOPY"

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Spin trap used in conjunction with Fe²⁺ to detect NO in brain, kidney, liver, and other tissues. Simultaneous direct measurement of NO* and pO₂ has been reported. A copper chelator, it has been used to quantitate copper in biological materials by ESR and is an inhibitor of superoxide dismutase, ascorbate oxidase, and other enzymes. Also used for colorimetric determination of small quantities of arsenic. Silver diethyldithiocarbamate has been used in cell culture. Also used for colorimetric determination of small quantities of arsenic. Spin trap used in conjunction with Fe²⁺ to detect NO in brain, kidney, liver, and other tissues. Simultaneous direct measurement of NO* and pO₂ has been reported. A copper chelator, it has been used to quantitate copper in biological materials by ESR and is an inhibitor of superoxide dismutase, ascorbate oxidase, and other enzymes.

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Fluorescein isothiocyanate (FITC) is widely used to attach a fluorescent label to proteins via the amine group. The isothiocyanate group reacts with amino terminal and primary amines in proteins. It has been used for the labeling of proteins including antibodies and lectins.

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1,1′-Dioctadecyl-3,3,3′,3′-tetramethylindocarbocyanine perchlorate is also called as Dil. It can be used to study HCV (Hepatitis C virus) cell interactions in the HCV entry process. It is used to label oxidized LDL (low-density lipoprotein) to quantify the uptake of DiI-oxLDL in human endothelial cells.

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3,3'-Dipropylthiacarbocyanine iodide,98% (3-Propyl-2-[3-[3-propyl-2(3H)benzothiazolylidene]-1-propenyl]benzothiazolium iodide; DiSC3(3))

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5,10,15,20-Tetraphenyl-21H, 23H-porphine-p,p′,p,p′′′-tetrasulfonic acid tetrasodium hydrate is a water-soluble porphyrin. It is a negatively charged compound due to the presence of the sulfonate groups. It has been used to functionalize chemically converted graphene to form conductive graphene films of varying thickness.

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When immobilised using an insoluble porous support matrix such as agarose, Cibacron Blue 3GA is used for affinity chromatography purification of enzymes. This affinity has been attributed to a structural similarity between the dye and the natural ligands for proteins with cofactor binding domains.

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Clobetasone butyrate is a corticosteroid. It can be used as a diagnostic assay manufacturing, hematology, histology. Clobetasone butyrate has been used as an internal standard for the quantitative assay of clobetasol propionate. Clobetasone butyrate has been used to analyse its bio-concentration factor (BCF) in cyprinus carpio. Clobetasone butyrate is a potent topical corticosteroid and is primarily used to treat atopic dermatitis (AD). Low dosage of this drug is used to treat dry eye in sjogrens syndrome.

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Murexide is the ammonium salt of purpuric acid that appears as a slightly reddish-purple powder and is soluble in water. It is mainly used as an indicator for complexometric titrations to measure water hardness and as a colorant/pigment in the dye industry.

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Propionaldehyde 2,4-dinitrophenylhydrazone analytical standard, for environmental analysis, Sigma-Aldrich®

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Oil red O, Sigma-Aldrich®

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Histology slides with paraffin embedded section of human intestine containing argentaffin granules. Suitable for use with Fontana-Masson stain kit (Procedure No. HT200).

Supplier: SIGMA ALDRICH MICROSCOPY

5-Carboxyfluorescein diacetate has been used for the staining of bacteria to study bacterial adhesion to mucin.

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Fluorescent stain for rapid detection of yeasts, fungi and parasitic organisms. Calcofluor white is a non-specific fluorochrom that binds to cellucose and chitin in cell walls.

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Mordant Blue 9, Dye content 50 % (6-(5-Chloro-2-hydroxy-3-sulfophenylazo)-5-hydroxy-1-naphthalenesulfonic acid disodium salt; 6-(5-Chloro-2-hydroxy-4-sulfonphenylazo)-5-hydroxy-1-naphthalene-sulfonic acid sodium salt)

Supplier: SIGMA ALDRICH MICROSCOPY

Orange II sodium salt,(Certified by the Biological Stain Commission), Dye content ≥85 % (4-(2-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt; Acid Orange 7; Acid Orange A; Orange II; Tropaeolin 000 No. 2).

Supplier: SIGMA ALDRICH MICROSCOPY

Reichstein's substance S ≥98%

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Nigrosin, alcohol soluble. Nigrosin is a black colored powder. It is widely used to manufacture ink and shoe polish. It is also employed for dyeing leather, wood and textiles. In addition, alcohol soluble nigrosin dye is used in carbon papers, typewriter and ribbons. It is used as an ingredient in rubber repairing lacquer.

Supplier: SIGMA ALDRICH MICROSCOPY

For use in Sigma Procedure 91C for the demonstration of specific esterase in blood, bone marrow films, tissue touch preparations, cytocentrifuge preparations and paraffin tissue sections.

Supplier: SIGMA ALDRICH MICROSCOPY

2-Sulphobenzoic cyclic anhydride ≥90%, Sigma-Aldrich®

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Alcian Blue, pyridine variant, Dye content ≥85 % (Alcian Blue-tetrakis(methylpyridinium) chloride)

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Fluorescent label for amino acids allows for detection of alanine, arginine, glycine, glutamic and aspartic acid in the 0.8-4.5 × 10-18 M range.

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Coproporphyrin I tetramethyl ester. ≥90% (HPLC) (Tetramethyl 3,8,13,18-tetramethyl-21H,23H-porphine-2,7,12,17-tetrapropionate)

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Rhodamine B is a xanthene dye, which functions as a water tracer fluorescent. It is used as a colorant in textiles and food stuffs. Rhodamine B is associated with eye, skin and respiratory tract irritation. It is used as a biomarker in oral rabies vaccine.

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Fluorescent probe for hydrophobic (non-polar) regions in proteins and nucleoproteins.

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Metachromatic dye useful as a mitochondrial probe in living cells. This dye has been used to analyse mitochondria by flow cytometry, characterise multidrug resistance, and measure changes in mitochondrial mass during apoptosis in rat thymocytes.

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Aniline blue is used to stain collagen fibers in tissue sections using the Masson′s trichrome protocol for staining multiple components. Collagen is stained blue by this method. It has also been used to stain and visualize glycosylated proteins.

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Used in procedure HT100 for the toning of sections stained with the silver methanamine procedure.

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Leukocyte Alkaline Phosphatase (LAP) kits are intended for the semi-quantitative demonstration of alkaline phosphatase activity in white blood cells.

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Orange G (certified), 0.3% and phosphotungstic acid, 0.015%, in denatured alcohol

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4-Amino-1,1′-azobenzene-3,4′-disulfonic acid monosodium salt, also called as acid yellow 9, belongs to the class of azo dyes.