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4,4′-Azo-bis(4-cyanovaleric acid), (∼18% H₂O) 98%

Supplier: Thermo Scientific Chemicals
Description: 4,4'-Azobis(4-cyanovaleric acid) is used as a free radical imitator in polymer synthesis such as polyvinyl chloride, polyacrylonitrile, polyvinyl alcohol, and synthetic fibres. It is utilized for both heterogeneous and homogenous free-radical polymerizations and as an initiator in reversible addition-fragmentation chain transfer polymerization (RAFT). It is also used as a blowing agent for plastics and elastomers.

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Product Image-97063-702

Trypan blue 0.4% in aqueous solution ready-to-use, sterile

Catalog Number: (97063-702)
Supplier: VWR
Description: A pre-mixed dye solution used in cell culture applications to determine cell viability. A researcher can remove a sample of cells from culture and combine in a 1:1 ratio with the Trypan Blue solution. Under the microscope, dead cells will appear a blue color and viable cells will appear clear and translucent. Using a hemacytometer (gridded microscope slide), a researcher can quantify the percentage of dead cells within a population. Stained cells are ready for counting within five minutes.

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Image Unavailable-TCA5011-001G

Stilbazo

Supplier: TCI America
Description: [Spectrophotometric reagent for Al and other metals]
CAS Number: 1571-36-4
MDL Number: MFCD00045752
Molecular Formula: C26H26N6O10S2
Molecular Weight: 646.65
Form: Crystal
Color: Deep Yellow Red

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Image Unavailable-TCT0556-025G

Trypan blue

Catalog Number: (TCT0556-025G)
Supplier: TCI America
Description: CAS Number: 72-57-1
MDL Number: MFCD00003969
Molecular Formula: C34H28N6O14S4
Molecular Weight: 960.79
Form: Crystal
Color: Deep Green

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Product Image-97061-520

Congo red, Certifiable Grade

Catalog Number: (97061-520)
Supplier: VWR
Description: pH indicator goes from blue to red over a range of 3.0 to 5.0. A cytoplasmic stain for tissues fixed in BouinÆs. Also a specific stain for amyloid.

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Product Image-CA45000-717

Trypan blue solution 0,4% (w/v) in PBS stain for histology pH 7.5 ±0.5, Corning®

Catalog Number: (CA45000-717)
Supplier: Corning
Description: Trypan Blue is the most common stain used in cell count and viability assays.

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Image Unavailable-CA82024-256

Trypan blue 0.4% in PBS

Catalog Number: (CA82024-256)
Supplier: Cytiva
Description: Trypan Blue solution, 0,4%, is routinely used as a cell stain to assess cell viability using the dye exclusion test.

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Product Image-RC2250-16

Congo red 0.1% (w/v) in aqueous solution indicator

Supplier: Ricca Chemical
Description: 0.1% (w/v) Aqueous Solution. Poly bottle. 120mL

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Image Unavailable-TCC0550-025G

Congo red ≥98.0% (by HPLC)

Catalog Number: (TCC0550-025G)
Supplier: TCI America
Description: CAS Number: 573-58-0
MDL Number: MFCD00004028
Molecular Formula: C32H24N6O6S2
Molecular Weight: 696.66
Purity/Analysis Method: >98.0% (HPLC)
Form: Crystal

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Image Unavailable-CA1.01340.0025

Congo red Reag. Ph. Eur. indicator (C.I. 22120), Supelco®

Catalog Number: (CA1.01340.0025)
Supplier: MilliporeSigma
Description: Grade Reagent Ph Eur, Cas Number 573-58-0

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Image Unavailable-TCB0780-025G

Bismarck brown Y

Catalog Number: (TCB0780-025G)
Supplier: TCI America
Description: CAS Number: 10114-58-6
MDL Number: MFCD00012977
Molecular Formula: C18H18N8
Molecular Weight: 419.31
Form: Crystal
Color: Deep Yellow Red

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Image Unavailable-CAAAA16674-14

Bismarck brown Y

Supplier: Thermo Scientific Chemicals
Description: Plasma stain for mucins, cartilage and goblet cells

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Product Image-RC500016

Methyl orange 0.1% (w/v) in aqueous solution indicator

Supplier: Ricca Chemical
Description: C.I. 13025; p-[[p-(dimethylamino)phenyl]azo]benzenesulfonic acid, sodium salt. CAS RN 547-58-0. Formula Weight: 327.33. Solution, 0.1% (w/v). pH 3.2 (pink)-4.4 (yellow). Packaged in a plastic container. 1L.

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Image Unavailable-TCA5008-001G

Dimethylsulfonazo III

Supplier: TCI America
Description: [Spectrophotometric reagent for alkaline earth metals and indicator for the precipitation titration of SO4 with Ba]
CAS Number: 14979-11-4
MDL Number: MFCD00151118
Molecular Formula: C24H20N4O14S4
Molecular Weight: 716.68
Form: Crystal
Color: Deep Yellow Red

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Image Unavailable-TCB4166-5G

4,4'-Biphenyldiboronic acid bis(pinacol)ester ≥98.0% (by GC, titration analysis)

Supplier: TCI America
Description: CAS Number: 207611-87-8
MDL Number: MFCD08669545
Molecular Formula: C24H32B2O4
Molecular Weight: 406.14
Purity/Analysis Method: >98.0% (GC,T)
Form: Crystal
Melting point (°C): 262

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Image Unavailable-TCD1757-025G

4,4'-Dithiodibutyric acid ≥95.0% (by GC, titration analysis)

Supplier: TCI America
Description: CAS Number: 2906-60-7
MDL Number: MFCD00004406
Molecular Formula: C8H14O4S2
Molecular Weight: 238.32
Purity/Analysis Method: >95.0% (GC,T)
Form: Crystal
Melting point (°C): 108

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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
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To order chemicals, medical devices, or other restricted products please provide identification that includes your business name and shipping address via email CMD_NA@vwr.com or fax 484.881.5997 referencing your VWR account number . Acceptable forms of identification are:

  • issued document with your organization's Federal Tax ID Number
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