Skip to Content
Merck
CN

V000600

Congo Red

Synonym(s):

Congo Red 4B, Cosmos Red, Cotton Red B, Cotton Red C, Direct Red 28, Direct Red R, Direct Red Y

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Empirical Formula (Hill Notation):
C32H22N6Na2O6S2
CAS Number:
573-58-0
Molecular Weight:
696.66
PubChem Substance ID:
329828115
EC Number:
209-358-4
Beilstein/REAXYS Number:
3894858
Colour Index Number:
22120
MDL number:
MFCD00004028

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

SMILES string

[Na+].[Na+].Nc1c(cc(c2ccccc12)S([O-])(=O)=O)\N=N\c3ccc(cc3)-c4ccc(cc4)\N=N\c5cc(c6ccccc6c5N)S([O-])(=O)=O

InChI

1S/C32H24N6O6S2.2Na/c33-31-25-7-3-1-5-23(25)29(45(39,40)41)17-27(31)37-35-21-13-9-19(10-14-21)20-11-15-22(16-12-20)36-38-28-18-30(46(42,43)44)24-6-2-4-8-26(24)32(28)34;;/h1-18H,33-34H2,(H,39,40,41)(H,42,43,44);;/q;2*+1/p-2/b37-35+,38-36+;;

InChI key

IQFVPQOLBLOTPF-HKXUKFGYSA-L

mp

>360 °C (lit.)

Looking for similar products? Visit Product Comparison Guide

pictograms

Health hazard
GHS08

signalword

Danger

Hazard Classifications

Carc. 1B - Repr. 2

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk

WGK 3

Regulatory Information

新产品
This item has

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
DCBD8415
DCBD8160
DCBD6508V
DCBD6021V

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Hideyo Inouye et al.
Sub-cellular biochemistry, 38, 203-224 (2005-02-16)
We consider here the chemistry of Congo red (CR), its binding equilibrium to Alzheimer's beta-amyloid, and the kinetics of beta-amyloid formation. Spectroscopic UV/V is measurements for the pH- and time-dependence binding of CR to Abeta analogues are analysed by Scatchard
Alexander J Howie et al.
Micron (Oxford, England : 1993), 40(3), 285-301 (2008-11-21)
Amyloid stained by Congo red has striking optical properties that generally have been poorly described and inadequately explained, although they can be understood from principles of physical optics. Molecules of Congo red are orientated on amyloid fibrils, and so the
Nibaldo C Inestrosa et al.
Current Alzheimer research, 2(3), 301-306 (2005-06-25)
The cholinergic system impairment observed in Alzheimer's disease (AD) patients leads to the cognitive, global and behavioral dysfunction commonly associated with dementia. The only treatment for AD has been the use of inhibitors of acetylcholinesterase (AChE) (E.C. 3.1.1.7), which is
Biomedicine. Proteins and a pregnancy woe.
Nadia Whitehead
Science (New York, N.Y.), 345(6194), 249-249 (2014-07-19)
Cecilia G Clement et al.
Human pathology, 45(8), 1766-1772 (2014-06-18)
Congo red stain apple-green birefringence under polarized light is the most popular method for detecting amyloid; however, it has limitations. The goal of this study was to evaluate if examination of Congo red stain by fluorescent microscopy (FM) significantly enhances
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service