Stains and Dyes

A variety of solutions used to selectively bind to and enhance the visibility of biological structures using color and/or fluorescence; used for histology, protein staining, electrophoresis, bacterial classification, blotting, etc.

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6,391 – 6,405 of 7,245 results

6,391

Biotium Calcein AM, 20x50 ug

Calcein AM is a widely used green fluorescent cell marker. Calcein AM is membrane-permeant and thus can be introduced into cells via incubation. Once inside the cells, calcein AM is hydrolyzed by endogenous esterase into the highly negatively charged green fluorescent calcein, which is retained in the cytoplasm. Calcein AM is an excellent tool for the studies of cell membrane integrity and for cell tracing. Supplied in lyophilized form or as a solution in anhydrous DMSO at 4 mM (80011-1) or 1 mg/mL (1 mM) (80011-2). Calcein AM is also offered in our Cell Viability and Cytotoxicity Assay Kit. Properties: Ex/Em (calcein) = 494/517 nm (pH 8); Colorless solid soluble in DMSO; Store at -20°C and protect from light; C46H46N2O23; MW: 995

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6,392

Biotium Thiazole Orange, 10mM in DMSO

Thiazole orange (TO) is a nucleic acid dye commonly used in reticulocyte analysis to stain residual RNA of blood cells, or to stain DNA in agarose gels and capillary electrophoresis. Thiazole Orange stains the yeast nucleus, and is also able to stain bacteria and mammalian cells. The dye has an excitation/emission of 512/533 nm when bound to DNA. Properties: Orange solution; Store dessicated at 4°C, protect from light; Ex/Em= 512/533 nm (with DNA); C26H24N2O3S2; MW: 476.61; [67-68-5].

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6,393

Sigma Aldrich Fine Chemicals Biosciences Schiffs reagent , 7681-57-4

Schiffs reagent

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6,394

American Research Products Inc NEUTRAL BALSAM

5000264937 NEUTRAL BALSAM

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6,395

Bioworld Agarose Gel Loading Dye, (6X), Alkaline, 50 mL

Agarose Gel Loading DyeGel loading dye for molecular biologyAlkalineSpecifications:6X concentration300 mM NaOH6 mM EDTA0.25% Bromocresol Green0.25% Xylene cyanol FF18% Ficoll in water

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6,396

Biotium Concanavalin A, CF405M Conjugate

This product is fluorescently-labeled concanavalin A (Con A). Con A is a widely used lectin that selectively binds to a-mannopyranosyl and a-glucopyranosy residues, found in the cell wall of yeast and fungi, and the cell membrane of mammalian cells. CF dyes are Biotium's line of next-generation fluorescent dyes with advantages in brightness, photostability, and conjugate specificity compared to other fluorescent dyes. Blue fluorescent CF405M dye has excitation/emission at 408/452 nm.

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6,397

Biotium RH795

The styryl dye RH795 is a fast-responding potentiometric probe that is primarily used for functional imaging of neurons. The dye is spectrally similar to RH414, but exhibits different physiological effects during staining. For example, RH414 causes arterial constriction during cortex staining, while RH795 does not. The excitation/emission data below are for the dye in methanol. In cell membranes, the spectra of styryl dyes are typically blue-shifted by as much as 20 nm for absorption or excitation and 80 nm for emission. Properties: Ex/Em (MeOH) = 530/712 nm; Orange red solid soluble in H2O; Store at -20°C and protect from light; C26H39Br2N3O2; MW: 585.42; [172807-13-5]

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6,398

Biotium JC-1 (chloride salt)

JC-1 (5,5',6,6'-Tetrachloro-1,1',3,3'-tetraethylbenzimidazolylcarbocyanine chloride) is a live cell membrane potential-dependent mitochondrial dye. A ratiometric dye, JC-1 monomers (green fluorescence, Em = 527 nm) are in equilibrium with so-called J-aggregates (red fluorescence, Em = 590nm) that are favored at higher dye concentrations or higher mitochondrial membrane potential. The green/red fluorescence ratio can therefore be used as a measure of mitochondrial membrane potential. JC-1 is particularly useful for apoptosis studies. In apoptotic cells, the dye stays in the cytoplasm and fluoresces green. It is also used in high-throughput drug screening applications. JC-1, iodide is the original salt form of the dye. JC-1, chloride is preferable for applications where the iodide ion is not desired, while also being potentially more water soluble.Properties: e (MeOH) = 190,000; Red solid soluble in DMSO; Store at 4°C; Protect from light, especially in solution; C25H27Cl5N4; MW: 561.5