"SIGMA ALDRICH MICROSCOPY"
N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride ≥95%, powder
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N,N,N′,N′-Tetramethyl-p-phenylenediamine dihydrochloride (TMPD) is a redox mediator used in the oxidase test for detecting bacterial cytochrome c oxidases. TMPD is commonly used to perform the oxidase test for the colorimetric identification of pathogenic and non-pathogenic bacteria.
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2',7'-Dichlorofluorescein ~90% (by TLC), powder chemical indicator, Sigma-Aldrich®
Supplier: SIGMA ALDRICH MICROSCOPY
2′,7′-Dichlorofluorescein is an oxidation-sensitive fluorescent probe. 2′7′-dichlorofluorescein diacetate is oxidized to 2′7′-dichlorofluorescein in the presence of ROS (reactive oxygen species). 2′,7′-Dichlorofluorescein has been used as an oxidation-sensitive fluorescent probe to measure ROS (reactive oxygen species) formation in cells.
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Neutral red, Sigma-Aldrich®
Supplier: SIGMA ALDRICH MICROSCOPY
Neutral red, Sigma-Aldrich®
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Methyl green zinc chloride salt ~85%, Sigma-Aldrich®
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Methyl green is a synthetic, triphenylmethane-type cationic dye related to ethyl green mainly used as DNA stain in histochemistry. It possesses aniline rings with different degrees of methylation. The dye binds specifically to the A-T rich regions of the major groove of DNA with the help of two positive charges. Methyl green in combination with pyronin is extensively used to stain RNA and plasma cells in tissue sections and cytologic preparations.
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New methylene Blue N ~70% (dye content), Sigma-Aldrich®
Supplier: SIGMA ALDRICH MICROSCOPY
New methylene blue N has been used as a photosensitizer for the photodynamic inactivation of Candida albicans.
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Thymoquinone ≥98%, Sigma-Aldrich®
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Thymoquinone has been used as an inhibitor of Escherichia coli ATP synthase and cell growth. It is also used as a drug against lower limb ischemia-reperfusion injury of sciatic nerve and femoral muscle. Thymoquinone is employed in preclinical studies as a neuroprotective and anticonvulsant agent.
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Naphthol AS-MX phosphate, Sigma-Aldrich®
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Naphthol AS-MX phosphate, Sigma-Aldrich®
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Tris(4-nitrophenyl)amine, Technical Grade, Sigma-Aldrich®
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Tris(4-nitrophenyl)amine, Technical Grade, Sigma-Aldrich®
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Silver nitrate 2.5% for microscopy, Sigma-Aldrich®
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Silver nitrate along with iodine are among several inorganic substances used to induce colour in microscopical preparations. Silver nitrate as a biological stain exploits the strong colors of colloidal metallic silver. Silver nitrate is an important component of the silver staining that is used for the detection of proteins separated by polyacrylamide gel electrophoresis. Silver nitrate is a component of the silver stain kit. It is required for image development in diamine as well as non-diamine silver staining.
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Methyl blue, Sigma-Aldrich®
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Methyl blue (C.l. 42780) is a triaminotriphenylmethane dye with each amino group carrying a monosulfonated phenyl substituent. It is also known as Water blue, Acid blue 93, Cotton blue, Poirriers blue, and Aniline blue water soluble.
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Nitro blue tetrazolium chloride (NBT), tablets, Sigma-Aldrich®
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Nitro Blue Tetrazolium is a tetrazole compound with two tetrazole rings.
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5-(Iodoacetamido)fluorescein ≥90% (by HPLC), Sigma-Aldrich®
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5-(Iodoacetamido)fluorescein. ≥90% (HPLC) (5-IAF)
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FITC (fluorescein-5-isothiocyanate, fluorescein isothiocyanate isomer I) ≥97.5% (by HPLC), Sigma-Aldrich®
Supplier: SIGMA ALDRICH MICROSCOPY
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. Fluorescein isothiocyanate isomer I has been used for the staining of conidia.
Reagent for the FITC labeling of proteins; Microsequencing of proteins and peptides (HPLC).
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Trisodium citrate solution, Sigma-Aldrich®
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Used as a kit component for the 91A and 91C procedures for Esterase.
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Propidium iodide solution 1.0 mg/ml in water
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Membrane impermeant, phenanthridinium intercalator dye excited by mercury or xenon-arc lamps or argon-ion laser. Suitable for use in fluorescence microscopy, confocal laser scanning microscopy, flow cytometry, and fluorometry. Used as a nuclear counterstain.
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Naphthol AS-D Chloroacetate (Specific Esterase) Kit Select reagents packaged in gelatin capsules., Sigma-Aldrich®
Supplier: SIGMA ALDRICH MICROSCOPY
Kit used to detect neutrophils in peripheral blood, bone marrow or tissue sections which have been paraffin embedded.