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

CAS: 3441-14-3 Cat. No.: D330637 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
USA
Germany (EU)*
Price
Qty
50g
D330637-50g
2 In stock
$123.90
250g
D330637-250g
5 In stock
4 In stock
$333.90
Enter a quantity for the sizes you want to add.
🧪

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 Sid488202905
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488202905
Canonical SmilesCC(=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 Namedisodium;7-[[6-[(4-acetamidophenyl)diazenyl]-5-hydroxy-7-sulfonatonaphthalen-2-yl]carbamoylamino]-4-hydroxy-3-phenyldiazenylnaphthalene-2-sulfonate
InChIKeyNLMHXPDMNXMQBY-UHFFFAOYSA-L
INCHI1S/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.

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 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
References
1. Dong Yangbo, Feng Danyang, Li Wei, Zhang Rui, Dou Shuzhen, Wang Luoqi, Yang Yan, Wang Li, Yang Yang, Wei Feng, Qiao Zhen-An.  (2023)  Interfacial co-assembly strategy towards gradient mesoporous hollow sheet for molecule filtration.  NPG Asia Materials,  15  (1): (1-8).  [PMID:] [10.1038/s41427-023-00500-0]
2. Heguo Han, Chi Zhang, Huiting Yu, Zheng Liu, Jing Guo, Qifeng Zhang, Yuxuan Sun, Shenghai Li, Suobo Zhang.  (2023)  A novel organic solvent nanofiltration membrane prepared via green mild and simple crosslinking process.  JOURNAL OF MEMBRANE SCIENCE,      [PMID:] [10.1016/j.memsci.2023.122151]
3. Yang Cao, Yinhua Wan, Chulong Chen, Jianquan Luo.  (2023)  Catalyst-anchored secondary polymerization for highly permeable acid-resistant nanofiltration membrane preparation.  JOURNAL OF MEMBRANE SCIENCE,      [PMID:] [10.1016/j.memsci.2023.121991]
4. Yafei Su, Xuke Zhang, Hui Li, Donglai Peng, Yatao Zhang.  (2022)  In-situ incorporation of halloysite nanotubes with 2D zeolitic imidazolate framework-L based membrane for dye/salt separation.  CHINESE JOURNAL OF CHEMICAL ENGINEERING,      [PMID:] [10.1016/j.cjche.2022.11.005]
5. Rui Li, Shaochong Cao, Xiaoquan Feng, Jiayu Don, Xiaoxi Guo, Huixian Wang, Yatao Zhang.  (2022)  Guanidinium-based loose nanofiltration membranes for dye purification and chlorine resistance.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2022.121941]
6. Zhao Yang, Shushan Yuan, Yimeng Shi, Yuting Zhang, Shijie Bian, Sha Liang, Keke Xiao, Wenbo Yu, Huijie Hou, Jingping Hu, Bingchuan Liu, Jiakuan Yang.  (2022)  Nanofibrous Kevlar Hydrogel Ultrafiltration Membrane with High Acid Resistance and Antifouling Properties for Wastewater Treatment.  ACS ES&T Water,      [PMID:] [10.1021/acsestwater.2c00165]
7. Zhiyuan Zha, Song Zhao, Guangqing Ma, Aaron S Pittman, Zhi Wang, Jixiao Wang.  (2021)  Covalent organic framework membrane reconstructed through intra-pore reaction having tunable performance for molecular separation.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2021.120387]
8. Yang Cao, Jianquan Luo, Chulong Chen, Yinhua Wan.  (2021)  Highly permeable acid-resistant nanofiltration membrane based on a novel sulfonamide aqueous monomer for efficient acidic wastewater treatment.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2021.131791]
9. Yehao Jin, Qiangqiang Song, Na Xie, Weigang Zheng, Jing Wang, Junyong Zhu, Yatao Zhang.  (2021)  Amidoxime-functionalized polymer of intrinsic microporosity (AOPIM-1)-based thin film composite membranes with ultrahigh permeance for organic solvent nanofiltration.  JOURNAL OF MEMBRANE SCIENCE,      [PMID:] [10.1016/j.memsci.2021.119375]
10. Siyu Zhou, Xiaoquan Feng, Junyong Zhu, Qiangqiang Song, Guang Yang, Yatao Zhang, Bart Van der Bruggen.  (2021)  Self-cleaning loose nanofiltration membranes enabled by photocatalytic Cu-triazolate MOFs for dye/salt separation.  JOURNAL OF MEMBRANE SCIENCE,      [PMID:] [10.1016/j.memsci.2021.119058]
11. Xuke Zhang, Hui Li, Jing Wang, Donglai Peng, Jindun Liu, Yatao Zhang.  (2019)  In-situ grown covalent organic framework nanosheets on graphene for membrane-based dye/salt separation.  JOURNAL OF MEMBRANE SCIENCE,      [PMID:] [10.1016/j.memsci.2019.03.070]
12. Chi Zhang, Jiang-An You, Xue Wang, Rui Hou, Xiaofeng Li, Yuxuan Sun, Guorui Qin, Shenghai Li, Suobo Zhang.  (2024)  Design of Precursor Polymers Assists the Processing of Poly(ether ether ketone) Membranes in Solvents.  MACROMOLECULES,      [PMID:] [10.1021/acs.macromol.3c02072]
13. Huimin Dang, Xingtao Zuo, Juan Xiong, Jiajie He, Yun Zhou, Cong Ma, Shuili Yu, Zhongbing Chen.  (2024)  Novel highly permeable ultrathin polyamide composite membrane with interfacial polymerization of 4,6-diaminoresorcinol for molecular separation.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2024.127983]
14. Heguo Han, Linjian Sang, Jianhang Qiu, Zheng Liu, Huiting Yu, Qifeng Zhang, Yuxuan Sun, Shenghai Li, Suobo Zhang.  (2024)  Polyamide filled crosslinked polyaryletherketone composite membrane with high stability for organic solvent nanofiltration.  JOURNAL OF MEMBRANE SCIENCE,      [PMID:] [10.1016/j.memsci.2024.123041]
15. Henan Peng, Hongru He, Pan Chen, Ke Zhang, Chunhai Chen, Daming Wang.  (2024)  Preparation of highly efficient nanofiltration membranes resistant to organic solvents by adjusting zinc oxide nanoparticle-loaded attapulgite.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2024.127004]
16. Rui Li, Xiaoquan Feng, Huixian Wang, Donglai Peng, Shaochong Cao, Jingtao Wang, Yatao Zhang, Yong Wang.  (2024)  Stabilizing graphene oxide with complementary nanosheets for robust membranes with high flux.  JOURNAL OF MEMBRANE SCIENCE,      [PMID:] [10.1016/j.memsci.2024.122799]
17. Henan Peng, Pan Chen, Yuqi Wu, Chunhai Chen, Daming Wang.  (2024)  Synergistic preparation of organic solvent nanofiltration membranes from polydopamine/polyethyleneimine interlayers with aminated attapulgite.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2024.129503]
18. Li Ding, Yangzheng Huang, Le Shi, Youcai Chen, Dandan Cheng, Haoyu Zhan, Shao-Lu Li, Chunrui Wu.  (2024)  Tris-phenol phosphine oxide-based polyester loose nanofiltration membranes with a three-dimensional structure for efficient dye/salt separation.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2024.128962]
19. Yehao Jin, Aiwen Zhang, Guanying Dong, Jingwei Hou, Junyong Zhu, Yatao Zhang.  (2024)  Ultrathin membranes comprising polymers of intrinsic microporosity oligomers for high-performance organic solvent nanofiltration.  JOURNAL OF MEMBRANE SCIENCE,      [PMID:] [10.1016/j.memsci.2024.123436]
20. Huiting Yu, Xi Sun, Zheng Liu, Heguo Han, Jianhang Qiu, Qifeng Zhang, Yuxuan Sun, Shenghai Li, Suobo Zhang.  (2024)  Utilizing N-cyclohexyl imine as a protecting group enables faster fabrication of solvent-resistant PEK membranes.  POLYMER,      [PMID:] [10.1016/j.polymer.2024.127812]
21. Genyuan Zhang, He Wen, Jing Wang, Ziwen Dai, Yimeng Shi, Hao Tan, Jinghao Dang, Shoujin Wang, Wenbo Yu, Sha Liang, Jiakuan Yang, Shushan Yuan.  (2025)  Tunable crosslinking PPTA nanofiltration membranes with tailored pore architectures for high-efficiency dye/salt separation.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2025.134793]
22. Binyu Zhou, Yuanfang Wang, Miaomiao Tian, Xueli Cao, Li Han, Shi-Peng Sun, Yatao Zhang, Junyong Zhu, Bart Van der Bruggen.  (2025)  Design and fabrication of microporous polyesteramide composite membranes for high-performance molecule/ion fractionation.  JOURNAL OF MEMBRANE SCIENCE,      [PMID:] [10.1016/j.memsci.2025.124681]
23. Kai Li, Junyong Zhu, Decheng Liu, Yatao Zhang, Bart Van der Bruggen.  (2021)  Controllable and Rapid Synthesis of Conjugated Microporous Polymer Membranes via Interfacial Polymerization for Ultrafast Molecular Separation.  CHEMISTRY OF MATERIALS,      [PMID:] [10.1021/acs.chemmater.1c02143]
24. Guobao Ning, Huan Liang, Linjiang Guo, Xiaokang Lu, Lin Xiao, Tianle Qi, Hui Zhao, Can-Peng Li.  (2024)  Chiral FeNC single-atom nanozymes with multi-enzyme activity for dye degradation.  Journal of Environmental Chemical Engineering,      [PMID:] [10.1016/j.jece.2024.114471]
25. Long Zhang, Jingzhen Wang, Ying Zhang, Linlin Zang, Yanqiu Yang, Yanhong Zhang, Xu Wang, Liguo Sun.  (2024)  Covalent triazine framework-based porous mixed matrix membranes for highly efficient dye/salt separation.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2024.127745]
26. Henan Peng, Fengqin Hong, Pan Chen, Chunhai Chen, Daming Wang, Hongwei Zhou.  (2025)  Preparation of organic solvent-resistant nanofiltration membranes through copper sulfate (CuSO4)/hydrogen peroxide (H2O2) oxidation triggered polydopamine (PDA)/polyethyleneimine (PEI) deposition interlayer.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2025.133090]
27. Jiulong Yin, Lei Qi, Na Li, Meng Li, Chao Jiang, Yujian Yao, Xuan Zhang.  (2025)  Brominated monomer-enabled polyester tight ultrafiltration membranes for efficient dye/salt separation and anti-fouling performance.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2025.136009]
28. Jiajie Shi, Yang Liu, Yongsheng Chen, Zhenggong Wang, Jian Jin.  (2026)  Fluorinated Covalent Organic Framework Membranes for High-Flux Nonpolar Organic Solvent Nanofiltration.  ADVANCED FUNCTIONAL MATERIALS,      [PMID:] [10.1002/adfm.202523813]
Solution Calculators
Reviews

Customer Reviews

Shall we send you a message when we have discounts available?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.