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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3,781 – 3,795 of 7,390 results

3,781

Aqua Solutions Reagent 507 (4L)

Reagent 507 (4L)

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3,782

Sigma Aldrich Fine Chemicals Biosciences Rhodamine 6G suitable for fluorescence, BioReagent | 989-38-8 | MFCD00012665 | 250MG

Rhodamine 6G suitable for fluorescence, BioReagent | Mol Wt: 479.01 | 989-38-8 | MFCD00012665 | 250MG

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3,783

Sigma Aldrich Fine Chemicals Biosciences Starch from potato suitabl5KG

Starch from potato suitabl5KG

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3,784

Andwin Scientific Starch Indicator, 1% w/v Aqueous, 1 L

Starch Indicator, 1% w/v Aqueous, 1 L

Pricing & Availability

3,785

TA Instruments Smart Swap 2 Replacement Starch Rotor for HR X0, for Use with Starch Pasting Cell

Waters TA Instruments Smart Swap 2 Replacement Starch Rotor For HR X0 is designed for use with the Starch Pasting Cell.

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3,786

Sigma Aldrich Fine Chemicals Biosciences Rhodamine 123 BioReagent, for fluorescence, >=85% (HPLC) | 62669-70-9 | MFCD00012664 | 50MG

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3,787

Sigma Aldrich Fine Chemicals Biosciences Orcein synthetic | 1400-62-0 | MFCD00062310 | 10G

Orcein synthetic | 1400-62-0 | MFCD00062310 | 10G

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3,788

Sigma Aldrich Fine Chemicals Biosciences Basic fuchsin special for25G

Basic fuchsin special for25G

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3,789

AnaSpec Thioflavin T UltraPure Grade, | MW 318.9 | (1 g)

Thioflavin T *UltraPure Grade*, ; MW 318.9; (1 g) The benzothiazole dye thioflavin T (ThT) is a classic amyloid stain for senile plaques containing bA4 peptide in Alzheimer's disease brain. ThT also binds rapidly and specifically to the anti-parallel b-sheet fibrils formed from synthetic b-amyloid (1-40), but does not bind to monomer or oligomeric intermediates. The fibrillar b-sheet-bound dye species undergoes a characteristic 120 nm red shift of its excitation spectrum that may be selectively excited at 450 nm, resulting in a fluorescence signal at 482 nm. ThT is a useful probe for the aggregated fibrillar state of b-amyloid (1-40) fibrils as the amyloid-specific fluorescence reports only fibrillar species. The binding of ThT does not interfere with the aggregation of this peptide into amyloid fibrils. The putative conformational changes detected by the ThT fluorescence suggest that small pharmacologic ligands can perturb and possibly dissociate Ab amyloid fibrils.