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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6,406 – 6,420 of 7,245 results

6,406

Abcam Thymolphthalein, Acid-base pH indicator (colorless-blue), 25G

MW 430.5 g/mol. Acid-base pH indicator. The transition range is around pH 9.3–10.5. Below this pH, it is colorless; above, it is blue. Acidic form retains hydrogen on each hydroxyl group.

The product is subject to the following: Abcam Restricted Use Statement

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6,407

Chem-Impex International, Inc. Propyl Red | MFCD00041752 | 25G

Propyl Red , MFCD00041752, 25G

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6,408

Chem-Impex International, Inc. Thiazole Yellow G (indicator for adsorption and fluorescence) | 1829-00-1 | MFCD00013091 | 25G

Thiazole Yellow G (indicator for adsorption and fluorescence), 1829-00-1, MFCD00013091, 25G

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6,409

Electron Microscopy Sciences Tissue Marking Dye Set

Fast drying dye is ideal for marking tissue biopsies and pathology specimens and can be used with frozen or fixed tissues. It is a specially formulated binding pigment that evenly coats the tissue without penetrating the tissue surface. The marking dyes do not interfere with diagnostic interpretation due to the fact colors are not similar to standard histopathology dyes. It can be used to permanently mark the margins of excised surgical specimens for exact orientation.

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6,410

Chem-Impex International, Inc. Methyl Red free acid ACS | MFCD00002425 | 25G

Methyl Red free acid ACS, MFCD00002425, 25G

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6,411

Sigma Aldrich Fine Chemicals Biosciences BioTracker Green Copper Li

Copper is one of the trace metals required by living organisms and is an essential cofactor for enzyme activities of cytochrome c oxidase superoxide dismutase and tyrosinase. On the other hand abnormal homeostasis of copper leads to severe disorders such as Menkes syndrome and Wilsons disease or may be related to Alzheimers disease and cancers.BioTracker Green Copper Live Cell Dye is a fluorescent probe to detect Cu which is a dominant redox state of copper in an intracellular reducing environment. The dye is a colorless material with almost no fluorescence. Upon the reaction with Cu its fluorescence intensity at 510 nm increases more than 100 times to that before the reaction. However fluorescence increase is not observed in the presence of reactive oxygen species and other trace metals in cells including Cu2 Mn2 Co2 Ni2 fe fe2 and Zn2.Spectral PropertiesAbsorbance (max) 480nmEmission (max) 510nmResearch CategoryLive Cell Dye

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6,412

Electron Microscopy Sciences Orange Tissue Marking Dye Refill 8 OZ

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6,413

Cayman Chemical Ruthenium Red, CAS: 11103-72-3, 250 mg

A polycationic dye that inhibits sarcoplasmic reticulum Ca2+ release, blocks Ca2+ uptake and release from mitochondria, and prevents Ca2+ release from ryanodine-sensitive intracellular stores in skeletal and cardiac muscle (Kis = 16 nm - 5.9 μM, depending on Ca2+ concentration)

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6,414

Cayman Chemical Resazurin (sodium salt), Purity: ≥85%, CAS: 62758-13-8, 25 g

A blue non-fluorescent dye that is used as an oxidation-reduction indicator in cell viability assays in a variety of cells; can be reduced to the highly red-fluorescent product resorufin (ex/em max = 570/580 nm, respectively) and used as a quantifiable detection agent in enzyme activity or gene expression assays

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6,415

Sigma Aldrich Fine Chemicals Biosciences BioTracker NucViewR 405 Bl

Caspases are a family of protease enzymes that play essential roles in programmed cell death termed apoptosis. Caspase-3 is a caspase protein that interacts with caspase-8 and caspase-9 and sequential activation of plays a central role in the execution-phase of cellular apoptosis.The BioTracker NucView 405 Blue Caspase-3 Dye provides a convenient live cell tool for profiling apoptotic cell populations based on caspase-3/7 activity using either fluorescence microscopy or flow cytometry. In contrast to other fluorogenic caspase substrates or fluorescent caspase inhibitor based (fLICA) assays the BioTracker NucView 405 Caspase-3 Dye can be used to detect caspase-3/7 activity within individual intact cells without inhibiting apoptosis progression. The substrate consists of a fluorogenic DNA dye coupled to the caspase-3/7 DEVD recognition sequence. The substrate which is initially non-fluorescent penetrates the plasma membrane and enters the cytoplasm. In apoptotic cells caspase-3/7 cl