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indicator Indicator for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 1104 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
| Pubchem Sid | 488200471 |
|---|---|
| Pubchem Sid Url | https://pubchem.ncbi.nlm.nih.gov/substance/488200471 |
| Canonical Smiles | CN(C)C1=CC=C(C=C1)N=NC2=CC=C(C=C2)S(=O)(=O)[O-].[Na+] |
| IUPAC Name | sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate |
| InChIKey | STZCRXQWRGQSJD-UHFFFAOYSA-M |
| INCHI | 1S/C14H15N3O3S.Na/c1-17(2)13-7-3-11(4-8-13)15-16-12-5-9-14(10-6-12)21(18,19)20;/h3-10H,1-2H3,(H,18,19,20);/q;+1/p-1 |
| Isomeric SMILES | CN(C)C1=CC=C(C=C1)N=NC2=CC=C(C=C2)S(=O)(=O)[O-].[Na+] |
| UN Number | 3143 |
| Packing Group | I |
| Molecular Weight | 327.33 |
| Reaxy-Rn | 3581305 |
| Reaxys-RN_link_address | https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=3581305&ln= |
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Organoheterocyclic compounds |
| Class | Azobenzenes |
| Subclass | Not available |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Azobenzenes |
| Alternative Parents | Benzenesulfonic acids and derivatives Benzenesulfonyl compounds 1-sulfo,2-unsubstituted aromatic compounds Dialkylarylamines Aniline and substituted anilines Sulfonyls Organosulfonic acids Azo compounds Propargyl-type 1,3-dipolar organic compounds Organic zwitterions Organic sodium salts Organic oxides Hydrocarbon derivatives |
| Molecular Framework | Aromatic homomonocyclic compounds |
| Substituents | Azobenzene - Benzenesulfonate - Arylsulfonic acid or derivatives - 1-sulfo,2-unsubstituted aromatic compound - Benzenesulfonyl group - Tertiary aliphatic/aromatic amine - Dialkylarylamine - Aniline or substituted anilines - Benzenoid - Monocyclic benzene moiety - Organic sulfonic acid or derivatives - Organosulfonic acid or derivatives - Organosulfonic acid - Sulfonyl - Azo compound - Tertiary amine - Organic alkali metal salt - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Organic sodium salt - Amine - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organosulfur compound - Organonitrogen compound - Organic zwitterion - Organic salt - Organic nitrogen compound - Aromatic homomonocyclic compound |
| Description | This compound belongs to the class of organic compounds known as azobenzenes. These are organonitrogen aromatic compounds that contain a central azo group, where each nitrogen atom is conjugated to a benzene ring. |
| External Descriptors | Not available |
Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
| Certificate of Analysis | Sep 01, 2026 | M101227 | |
| Certificate of Analysis | Apr 11, 2026 | M101227 | |
| Certificate of Analysis | Mar 23, 2026 | M101227 | |
| Certificate of Analysis | Dec 27, 2025 | M101227 | |
| Certificate of Analysis | Nov 21, 2025 | M101227 | |
| Certificate of Analysis | Jul 31, 2025 | M101227 | |
| Certificate of Analysis | Jun 18, 2025 | M101227 | |
| Certificate of Analysis | Jan 22, 2025 | M101227 | |
| Certificate of Analysis | Nov 18, 2022 | M101227 | |
| Certificate of Analysis | Nov 18, 2022 | M101227 | |
| Certificate of Analysis | Nov 18, 2022 | M101227 | |
| Certificate of Analysis | Nov 18, 2022 | M101227 | |
| Certificate of Analysis | Mar 08, 2022 | M101227 | |
| Certificate of Analysis | Mar 08, 2022 | M101227 | |
| Certificate of Analysis | Mar 08, 2022 | M101227 | |
| Certificate of Analysis | Mar 08, 2022 | M101227 | |
| Certificate of Analysis | Mar 08, 2022 | M101227 |
| Solubility | Slightly soluble in water, insoluble in ethanol, easily soluble in hot water. |
|---|---|
| Sensitivity | Moisture sensitive. |
| Boil Point(°C) | 100°C |
| Melt Point(°C) | >300°C |
| Molecular Weight | 327.340 g/mol |
| XLogP3 | |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 6 |
| Rotatable Bond Count | 4 |
| Exact Mass | 327.065 Da |
| Monoisotopic Mass | 327.065 Da |
| Topological Polar Surface Area | 93.500 Ų |
| Heavy Atom Count | 22 |
| Formal Charge | 0 |
| Complexity | 448.000 |
| 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 | 2 |
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