1051 Résultats pour : "SIGMA ALDRICH MICROSCOPY"

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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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When blood films are stained using Wright-Giemsa Stain, the white blood cell nucleus and cytoplasm take on the characteristic blue or pink coloration. The combination of purified eosin and thiazine dyes in the product eliminates inconsistent staining and yields reproducible chromogenic responses.

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Brilliant Blue R has been used in staining of gels after electrophoresis. It has also been used to determine protein in the protein bodies. For detection of protein bands following electrophoresis.

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Ethyl orange sodium salt 90% (teneur en colorant), Sigma-Aldrich®

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Brilliant Green is a dye and an antiseptic agent.

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A negatively charged polymethine dye that forms noncovalent fluorescent complexes with proteins.

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5(6)-Carboxyfluorescein diacetate Mixed isomers. ≥90% (HPLC)

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A preweighed vial containing 50 mg o-Dianisidine. o-Dianisidine (3,3′-dimethoxybenzidine) is a peroxidase substrate suitable for use in ELISA procedures. This substrate produces a soluble end product that is yellow-orange in color and can be read spectrophotometrically at 405 nm. The reaction may be stopped with 5 M HCl.

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Coumarin is also known as benzoαpyrone. Coumarin 7 is a laser dye that is usually found in the nature. Its derivatives are used in medicine and chemistry. It is present in plants in the form of glucosides. Coumarin acts as an antimutagen as it controls the mutagenic effects of several chemicals like aflatoxin B1and physical agents like ultraviolet light. Suitable as a laser dye.

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Adrenochrome has been used to study the effect of adrenochrome on coronary artery constriction in the rat heart.

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meso-Tétraphénylporphine ≥99%, Sigma-Aldrich®

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1,1′-Diethyl-2,2′-cyanine iodide has been used as an absorber in a method to correct the fluorescence excitation-emission matrix (EEM).

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Fluorescein-5-EX N-hydroxysuccinimide ester has been used for the labeling of antibodies.

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Indophenol is used in hair dyes, redox materials, lubricants, liquid crystal displays, biosensor and fuel cells. It is toxic to fishes and is implicated in environmental pollution. Indophenol method is common for the determination of ammonia. The reaction gives a blue product, which is measured spectrophotometrically.

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Lugol′s solution is a ready-to-use solution that comprises 6% iodine in 4% potassium iodide. It is commonly used as a mordant for Gram staining in bacteriology. It is used for staining bacterial target structures for diagnostic purposes by fixing, staining, counterstaining, and mounting bacteriological specimen materials.

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Disperse Yellow 3, Dye content 30 % (4-(2-Hydroxy-5-methylphenylazo)acetanilide; N-[4-(2-Hydroxy-5-methylphenylazo)phenyl]acetamide)

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Tris(4-nitrophenyl)amine, grade Technique, Sigma-Aldrich®

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3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-4′,4′′-disulfonic acid sodium salt is a chelating agent for ferrous iron. It is also known as Ferrozine.

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Ozone-scavenging reagent that reacts rapidly with ozone. Potassium indigotrisulfonate has been used: In colorimetric method of measurement of atmospheric ozone, for measuring residual aqueous ozone by gas diffusion flow injection analysis, to determine O₃ concentration in water.

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Ethyl viologen diperchlorate has been used in in-situ spectroscopic studies of viologen based electrochromic device.

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Ethyl viologen dibromide (1,1-diethyl- 4,4-bipyridinium dibromide) has been used as an internal standard in analysis of paraquat and diquat in the serum using high-performance liquid chromatography.

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4,5-Dibromobenzene-1,2-diol 90%, grade technique, Sigma-Aldrich®

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New methylene blue N has been used as a photosensitizer for the photodynamic inactivation of Candida albicans.

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Primuline, also known as direct yellow 59 or primuline yellow, is considered to be a more sensitive and non-destructive dye for lipids.

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Rose Bengal lactone 95%, Sigma-Aldrich®

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4-(2-Pyridylazo)resorcinol monosodium salt is a chromophoric indicator and chromogenic chelator employed for the spectrophotometric determination of several metal ions.

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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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3, 6-Diaminoacridine hydrochloride has been used for studying cation transfer at the liquid–liquid interface. An intercalating dye.

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Useful for quantitating biotin binding sites. This reagent binds to avidin more quickly than conventional fluorescein biotin.

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General purpose cytoplasmic counterstain. Used with hematoxylin and eosin staining.