Ponceau S - 10x , CAS No.6226-79-5

CAS: 6226-79-5 Cat. No.: P294403 Formula: C22H12N4Na4O13S4 Molecular Weight: 760.57 EC Number: 228-319-2
AVAILABLE TO ORDER
GRADE & PURITY 10x
Synonyms
HB0819 | UNII-T1C2UGS05F | 3-Hydroxy-4-((2-sulfo-4-((4-sulfophenyl)diazenyl)phenyl)diazenyl)naphthalene-2,7-disulfonic acid, tetrasodium salt | AKOS015902723 | CHEBI:90319 | 2,7-Naphthalenedisulfonic acid,3-hydroxy-4-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl
Storage
Store at 2-8°C
Shipped In
Wet ice
★
Size
Germany (EU)
USA*
Price
Qty
100ml
P294403-100ml
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2 In stock

€44.17

€51.98
Save €7.81 (15.03%)
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Why this grade

10x for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C Ships Wet ice Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 11 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
HB0819 | UNII-T1C2UGS05F | 3-Hydroxy-4-((2-sulfo-4-((4-sulfophenyl)diazenyl)phenyl)diazenyl)naphthalene-2,7-disulfonic acid, tetrasodium salt | AKOS015902723 | CHEBI:90319 | 2,7-Naphthalenedisulfonic acid,3-hydroxy-4-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl
Specifications & Purity
10x
Biochemical and Physiological Mechanisms
Protein dye for the rapid, reversible staining of protein bands on nitrocellulose, PVDF and cellulose acetate membranes. Staining is reversible allowing further immunological detection.
Storage
Store at 2-8°C
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Names and Identifiers
Pubchem Sid
Canonical Smiles
C1=CC(=CC=C1N=NC2=CC(=C(C=C2)N=NC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]
IUPAC Name
tetrasodium;3-hydroxy-4-[[2-sulfonato-4-[(4-sulfonatophenyl)diazenyl]phenyl]diazenyl]naphthalene-2,7-disulfonate
InChIKey
KQHKSGRIBYJYFX-UHFFFAOYSA-J
INCHI
1S/C22H16N4O13S4.4Na/c27-22-20(43(37,38)39)10-12-9-16(41(31,32)33)6-7-17(12)21(22)26-25-18-8-3-14(11-19(18)42(34,35)36)24-23-13-1-4-15(5-2-13)40(28,29)30;;;;/h1-11,27H,(H,28,29,30)(H,31,32,33)(H,34,35,36)(H,37,38,39);;;;/q;4*+1/p-4
Isomeric SMILES
C1=CC(=CC=C1N=NC2=CC(=C(C=C2)N=NC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]
WGK Germany
3
RTECS
QJ6600000
Molecular Weight
760.57
Reaxy-Rn
6265648
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=6265648&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassBenzenoids
ClassNaphthalenes
SubclassNaphthalene sulfonic acids and derivatives
Intermediate Tree Nodes Naphthalene sulfonates
Direct Parent2-naphthalene sulfonates
Alternative Parents Azobenzenes  2-naphthalene sulfonic acids and derivatives  Benzenesulfonic acids and derivatives  Benzenesulfonyl compounds  1-sulfo,2-unsubstituted aromatic compounds  Phenoxides  Sulfonyls  Organosulfonic acids  Azo compounds  Propargyl-type 1,3-dipolar organic compounds  Organopnictogen compounds  Organooxygen compounds  Organic sodium salts  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic homopolycyclic compounds
Substituents Azobenzene - 2-naphthalene sulfonic acid or derivatives - 2-naphthalene sulfonate - Benzenesulfonate - Arylsulfonic acid or derivatives - 1-sulfo,2-unsubstituted aromatic compound - Benzenesulfonyl group - Phenoxide - Monocyclic benzene moiety - Organic sulfonic acid or derivatives - Organosulfonic acid or derivatives - Organosulfonic acid - Sulfonyl - Azo compound - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Organic alkali metal salt - Organic sodium salt - Organic oxygen compound - Organopnictogen compound - Organic oxide - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Hydrocarbon derivative - Organic salt - Organic nitrogen compound - Aromatic homopolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as 2-naphthalene sulfonates. These are organic aromatic compounds that contain a naphthalene moiety that carries a sulfonic acid group at the 2-position. Naphthalene is a bicyclic compound that is made up of two fused benzene ring.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





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.

4 results found

Lot NumberCertificate TypeDateItem
A2309908Certificate of AnalysisAug 26, 2026 P294403
H2607018Certificate of AnalysisAug 14, 2026 P294403
B2519001Certificate of AnalysisMar 14, 2025 P294403
F2209279Certificate of AnalysisAug 24, 2022 P294403
Chemical and Physical Properties
Molecular Weight760.600 g/mol
XLogP3
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count17
Rotatable Bond Count4
Exact Mass759.887 Da
Monoisotopic Mass759.887 Da
Topological Polar Surface Area332.000 Ų
Heavy Atom Count47
Formal Charge0
Complexity1430.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count5
Documents & Articles
Protocol of Western blot for Phosphorylated Proteins
Common Questions and Answers for SDS-PAGE Experiments
Common Issues for Western Blot (WB)
Common Questions and Answers for Protein Marker Products — Membrane Transfer
Common Protein Gel Staining Methods
Masson’s Trichrome Stain (Masson’s Trichrome) Standard Operating Procedure (SOP)
Staining-Based Differentiation of Collagen Fibers, Muscle Fibers, and Fibrin in Tissue Sections
Principles, Method Types, and Application Selection of Common Trichrome Staining Systems
Application Comparison of Red Acid Biological Dyes: Acid Fuchsin, Acid Red, Ponceau, and Compound Staining Systems
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

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