Direct red 23 - Strength 100 , CAS No.3441-14-3

CAS: 3441-14-3 Cat. No.: D330637 Formula: C35H25N7Na2O10S2 Molecular Weight: 813.72 EC Number: 222-348-4
AVAILABLE TO ORDER
GRADE & PURITY Strength 100
Synonyms
CCRIS 9490 | DIRECT RED 23 | Direct Scarlet 4BS | Paper Scarlet 4BS | Scarlet 4BS | AKOS000282970 | Orbamin Scarlet 4BS | C.I. No. 29160 | Direct Scarlet SE | Mitsui Direct Fast Scarlet 4BS | Diamine Fast Scarlet 4BS | sodium 3-((E)-(4-acetamidophenyl)dia
Storage
Room temperature
Shipped In
Normal
★
Size
Germany (EU)
USA*
Price
Qty
50g
D330637-50g
—
2 In stock
€107.51
250g
D330637-250g
4 In stock
5 In stock
€289.74
Enter a quantity for the sizes you want to add.
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Why this grade

Strength 100 for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Normal 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 28 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Direct red 23 is an azo dye that has been used as a model compound in adsorption studies. As a model compound in adsorption studies, Direct red 23 has been utilized to compare efficacy of textile dye removal in aqueous solutions.|Other direct dyes offered include:|Direct Red 80 , Direct Red 81 , Direct Yellow 27 , Direct yellow 50 , Direct Blue 15 , Direct Blue 71 and Direct Violet 51 .

Specifications

Synonyms
CCRIS 9490 | DIRECT RED 23 | Direct Scarlet 4BS | Paper Scarlet 4BS | Scarlet 4BS | AKOS000282970 | Orbamin Scarlet 4BS | C.I. No. 29160 | Direct Scarlet SE | Mitsui Direct Fast Scarlet 4BS | Diamine Fast Scarlet 4BS | sodium 3-((E)-(4-acetamidophenyl)dia
Specifications & Purity
Strength 100
Storage
Room temperature
Shipped In
Normal
Note
Wavelength: 500-516 nm, Extinction Coefficient: ≥15,000Wavelength: 298-314 nm, Extinction Coefficient: ≥8,000Wavelength: 235-251 nm, Extinction Coefficient: ≥10,000C = 0.04g/l, Water
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/488202905
Canonical Smiles
CC(=O)NC1=CC=C(C=C1)N=NC2=C(C=C3C=C(C=CC3=C2O)NC(=O)NC4=CC5=CC(=C(C(=C5C=C4)O)N=NC6=CC=CC=C6)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
IUPAC Name
disodium;7-[[6-[(4-acetamidophenyl)diazenyl]-5-hydroxy-7-sulfonatonaphthalen-2-yl]carbamoylamino]-4-hydroxy-3-phenyldiazenylnaphthalene-2-sulfonate
InChIKey
NLMHXPDMNXMQBY-UHFFFAOYSA-L
INCHI
1S/C35H27N7O10S2.2Na/c1-19(43)36-22-7-9-24(10-8-22)40-42-32-30(54(50,51)52)18-21-16-26(12-14-28(21)34(32)45)38-35(46)37-25-11-13-27-20(15-25)17-29(53(47,48)49)31(33(27)44)41-39-23-5-3-2-4-6-23;;/h2-18,44-45H,1H3,(H,36,43)(H2,37,38,46)(H,47,48,49)(H,50,51,52);;/q;2*+1/p-2
Isomeric SMILES
CC(=O)NC1=CC=C(C=C1)N=NC2=C(C=C3C=C(C=CC3=C2O)NC(=O)NC4=CC5=CC(=C(C(=C5C=C4)O)N=NC6=CC=CC=C6)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
WGK Germany
2
RTECS
QK1237500
Molecular Weight
813.72
Reaxy-Rn
8535241
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=8535241&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.

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🔬 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 2-naphthalene sulfonic acids and derivatives  Acetanilides  1-sulfo,2-unsubstituted aromatic compounds  N-acetylarylamines  Phenoxides  Sulfonyls  Acetamides  Organosulfonic acids  Ureas  Secondary carboxylic acid amides  Azo compounds  Propargyl-type 1,3-dipolar organic compounds  Carbonyl compounds  Organic sodium salts  Hydrocarbon derivatives  Organic oxides  Organic cations  
Molecular FrameworkAromatic homopolycyclic compounds
Substituents 2-naphthalene sulfonate - 2-naphthalene sulfonic acid or derivatives - Acetanilide - Arylsulfonic acid or derivatives - N-acetylarylamine - Anilide - 1-sulfo,2-unsubstituted aromatic compound - N-arylamide - Phenoxide - Monocyclic benzene moiety - Organic sulfonic acid or derivatives - Organosulfonic acid or derivatives - Organosulfonic acid - Acetamide - Sulfonyl - Secondary carboxylic acid amide - Azo compound - Carboxamide group - Urea - Carboxylic acid derivative - Organic alkali metal salt - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Organic nitrogen compound - Organic oxygen compound - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organic salt - Organic sodium salt - Carbonyl group - Hydrocarbon derivative - Organic oxide - Organic cation - 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





Mechanisms of Action
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.

2 results found

Lot NumberCertificate TypeDateItem
J2218650Certificate of AnalysisAug 07, 2025 D330637
J2218653Certificate of AnalysisAug 07, 2025 D330637
Chemical and Physical Properties
SolubilitySoluble in water.
Molecular Weight813.700 g/mol
XLogP3
Hydrogen Bond Donor Count5
Hydrogen Bond Acceptor Count14
Rotatable Bond Count7
Exact Mass813.09 Da
Monoisotopic Mass813.09 Da
Topological Polar Surface Area291.000 Ų
Heavy Atom Count56
Formal Charge0
Complexity1560.000
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 Count3
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

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