Thermo Scientific Chemicals

Congo Red, indicator grade

Catalog number: B24310.22
100 g, Each
Thermo Scientific Chemicals

Congo Red, indicator grade

Catalog number: B24310.22
100 g, Each
Quantity
Catalog number: B24310.22
also known as B24310-22
Price (USD)
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Chemical Identifiers

CAS
573-58-0
IUPAC Name
disodium 4-amino-3-(2-{4'-[2-(1-amino-4-sulfonatonaphthalen-2-yl)diazen-1-yl]-[1,1'-biphenyl]-4-yl}diazen-1-yl)naphthalene-1-sulfonate
Molecular Formula
C32H22N6Na2O6S2
InChI Key
IQFVPQOLBLOTPF-UHFFFAOYSA-L
SMILES
[Na+].[Na+].NC1=C2C=CC=CC2=C(C=C1N=NC1=CC=C(C=C1)C1=CC=C(C=C1)N=NC1=CC(=C2C=CC=CC2=C1N)S([O-])(=O)=O)S([O-])(=O)=O
Form
Powder
Specific Absorbance (E 1%/1cm)
>500 @ lambda-max (pH 7)
Loss on Drying
≤5.0%
Solution Test
0.1% in water: clear
lambda-max (UV-Vis)
490-500nm @ pH 7

Description

Congo red is useful for staining and visual detection of amyloid deposits. It inhibits the accumulation of the scrapie-associated, protease-resistant isoform of protein PrP without affecting the metabolism of the normal isoform.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Congo red is useful for staining and visual detection of amyloid deposits. It inhibits the accumulation of the scrapie-associated, protease-resistant isoform of protein PrP without affecting the metabolism of the normal isoform.

Solubility
Soluble in water 25 g/L.

Notes
Store away from oxidizing agents, acids, reducing agents.
WARNING: Cancer – www.P65Warnings.ca.gov
RUO – Research Use Only

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