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Congo red - indicator, high purity , CAS No.573-58-0

550 Citations COA COA
In stock
Item Number
C100174
Grouped product items
SKU Size
Availability
 Price Qty
C100174-5g
5g
Available within 8-12 weeks(?)
Production requires sourcing of materials. We appreciate your patience and understanding.
$13.90
C100174-25g
25g
7
$24.90
C100174-100g
100g
3
$36.90
C100174-500g
500g
3
$92.90
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View related series
Fluorescent Dye (372) Titration indicator (58)

Basic Description

Synonyms Brasilamina congo 4B | Mitsui Congo Red | NSC 7232 | C.I. Direct Red 28, disodium salt (8CI) | Cotton Red L | disodium 3,3'-(biphenyl-4,4'-diyldidiazene-2,1-diyl)bis(4-aminonaphthalene-1-sulfonate) | Hispamin Congo 4B | DTXSID4022816 | C32H22N6O6S2.2Na |
Specifications & Purity indicator
Biochemical and Physiological Mechanisms Congo red is a benzidine-based anionic diazo dye. It is a histological dye which binds to many amyloid proteins and is used for the quantification of amyloid β-peptide aggregation. Congo red also interacts with β-D-glucans, polysaccharides containing cont
Shipped In Normal
Grade indicator

Taxonomic Classification

Taxonomy Tree

Kingdom Organic compounds
Superclass Benzenoids
Class Benzene and substituted derivatives
Subclass Biphenyls and derivatives
Intermediate Tree Nodes Not available
Direct Parent Benzidines
Alternative Parents 1-naphthalene sulfonic acids and derivatives  1-naphthalene sulfonates  1-sulfo,2-unsubstituted aromatic compounds  Sulfonyls  Organosulfonic acids  Azo compounds  Propargyl-type 1,3-dipolar organic compounds  Primary amines  Organopnictogen compounds  Organic sodium salts  Organic oxides  Hydrocarbon derivatives  
Molecular Framework Aromatic homopolycyclic compounds
Substituents Naphthalene sulfonate - 1-naphthalene sulfonic acid or derivatives - Naphthalene sulfonic acid or derivatives - 1-naphthalene sulfonate - Benzidine - Naphthalene - 1-sulfo,2-unsubstituted aromatic compound - Arylsulfonic acid or derivatives - Organic sulfonic acid or derivatives - Organosulfonic acid or derivatives - Organosulfonic acid - Sulfonyl - Azo compound - Propargyl-type 1,3-dipolar organic compound - Organic 1,3-dipolar compound - Organic alkali metal salt - Amine - Organic salt - Organic sodium salt - Primary amine - Organosulfur compound - Organonitrogen compound - Hydrocarbon derivative - Organic oxide - Organopnictogen compound - Organic oxygen compound - Organic nitrogen compound - Aromatic homopolycyclic compound
Description This compound belongs to the class of organic compounds known as benzidines. These are organic compounds containing the benzidine skeleton, made up of a biphenyl ring system substituted at the 4- and 4'-positions with a unsubstituted amine group.
External Descriptors azo compound

Associated Targets(Human)

DHFR Tclin Dihydrofolate reductase (3072 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
ACHE Tclin Acetylcholinesterase (18204 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
CHAT Tchem Choline acetylase (63 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
BCHE Tclin Butyrylcholinesterase (7174 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
APP Tclin Amyloid-beta A4 protein (8510 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
GLB1 Tchem Beta-galactosidase (339 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
CTRC Tchem Chymotrypsin C (381 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
ENPP2 Tchem Autotaxin (2645 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
ENPP6 Tbio Ectonucleotide pyrophosphatase/phosphodiesterase family member 6 (69 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
ENPP7 Tbio Ectonucleotide pyrophosphatase/phosphodiesterase family member 7 (69 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
TDP1 Tchem Tyrosyl-DNA phosphodiesterase 1 (345557 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
SLC7A11 Tchem Cystine/glutamate transporter (150 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
PHLPP2 Tbio PH domain leucine-rich repeat-containing protein phosphatase 2 (32 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID

Associated Targets(non-human)

ampC Beta-lactamase AmpC (62480 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
blaZ Beta-lactamase (285 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
Alpha-chymotrypsin (819 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
Candida albicans (78123 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
Nakaseomyces glabratus (9108 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
PC-12 (7051 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
BCHE Cholinesterase (8742 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID
ampC AmpC (52 Activities)
Activity Type Relation Activity value Units Action Type Journal PubMed Id doi Assay Aladdin ID

Mechanisms of Action

Mechanism of Action Action Type target ID Target Name Target Type Target Organism Binding Site Name References

Names and Identifiers

Pubchem Sid 488181305
Pubchem Sid Url https://pubchem.ncbi.nlm.nih.gov/substance/488181305
IUPAC Name disodium;4-amino-3-[[4-[4-[(1-amino-4-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]naphthalene-1-sulfonate
INCHI 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
InChIKey IQFVPQOLBLOTPF-UHFFFAOYSA-L
Smiles C1=CC=C2C(=C1)C(=CC(=C2N)N=NC3=CC=C(C=C3)C4=CC=C(C=C4)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)[O-])N)S(=O)(=O)[O-].[Na+].[Na+]
Isomeric SMILES C1=CC=C2C(=C1)C(=CC(=C2N)N=NC3=CC=C(C=C3)C4=CC=C(C=C4)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)[O-])N)S(=O)(=O)[O-].[Na+].[Na+]
Molecular Weight 696.66
Reaxy-Rn 3894858
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=3894858&ln=

Certificates（CoA,COO,BSE/TSE and Analysis Chart)

C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

28 results found

Lot Number Certificate Type Date Item
F2527291 Certificate of Analysis Mar 10, 2025 C100174
F2527315 Certificate of Analysis Mar 10, 2025 C100174
F2527324 Certificate of Analysis Mar 10, 2025 C100174
F2527290 Certificate of Analysis Mar 10, 2025 C100174
I2402570 Certificate of Analysis Aug 20, 2024 C100174
I2402571 Certificate of Analysis Aug 20, 2024 C100174
I2402572 Certificate of Analysis Aug 20, 2024 C100174
I2402573 Certificate of Analysis Aug 20, 2024 C100174
H2414240 Certificate of Analysis Jul 24, 2024 C100174
A2425318 Certificate of Analysis Jan 10, 2024 C100174
A2425319 Certificate of Analysis Jan 10, 2024 C100174
A2425344 Certificate of Analysis Jan 10, 2024 C100174
D2409022 Certificate of Analysis Jan 10, 2024 C100174
A2425342 Certificate of Analysis Jan 10, 2024 C100174
A2425343 Certificate of Analysis Jan 10, 2024 C100174
E2330099 Certificate of Analysis Jun 01, 2022 C100174
L2312018 Certificate of Analysis Jun 01, 2022 C100174
A2404273 Certificate of Analysis Jun 01, 2022 C100174
C2320608 Certificate of Analysis Jun 01, 2022 C100174
G2230080 Certificate of Analysis Jun 01, 2022 C100174
G2230081 Certificate of Analysis Jun 01, 2022 C100174
G2230196 Certificate of Analysis Jun 01, 2022 C100174
F2302920 Certificate of Analysis Jun 01, 2022 C100174
G2329033 Certificate of Analysis Jun 01, 2022 C100174
K2314051 Certificate of Analysis Jun 01, 2022 C100174
L2305027 Certificate of Analysis Jun 01, 2022 C100174
G2303582 Certificate of Analysis Jun 01, 2022 C100174
L2214797 Certificate of Analysis Oct 29, 2021 C100174

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Chemical and Physical Properties

Sensitivity Moisture sensitive.
Melt Point(°C) >360°C
Molecular Weight 696.700 g/mol
XLogP3
Hydrogen Bond Donor Count 2
Hydrogen Bond Acceptor Count 12
Rotatable Bond Count 5
Exact Mass 696.084 Da
Monoisotopic Mass 696.084 Da
Topological Polar Surface Area 233.000 Ų
Heavy Atom Count 48
Formal Charge 0
Complexity 1180.000
Isotope Atom Count 0
Defined Atom Stereocenter Count 0
Undefined Atom Stereocenter Count 0
Defined Bond Stereocenter Count 0
Undefined Bond Stereocenter Count 0
The total count of all stereochemical bonds 0
Covalently-Bonded Unit Count 3

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