Sodium 4-((4-aminophenyl)diazenyl)benzenesulfonate CAS 2491-71-6
| CAS No. | 2491-71-6 |
| Molecular Formula | C12H10N3O3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C12H10N3O3SNa, Sodium 4-((4-aminophenyl)diazenyl)benzenesulfonate contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 299.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Sodium 4-((4-aminophenyl)diazenyl)benzenesulfonate (CAS 2491-71-6) is a high-purity analytical reference standard with the molecular formula C12H10N3O3SNa and a molecular weight of 299.28 g/mol.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures Sodium 4-((4-aminophenyl)diazenyl)benzenesulfonate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H10N3O3S Na |
| Molecular Weight | 299.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Sodium Standards
- 4-((4-Aminophenyl)thio)phenol (CAS 100062-94-0)
- 1-(4-Aminophenyl)-3-cyclopropylurea (CAS 1000931-26-9)
- n-(3-Aminophenyl)-1-methyl-1h-pyrazole-3-carboxamide (CAS 1001500-68-0)
- 4-(4-Aminophenyl)tetrahydro-2H-pyran-4-ol (CAS 1002726-77-3)
- 1-(4-Aminophenyl)-4-methylpiperidin-4-ol (CAS 1002726-91-1)
- 2-((4-Aminophenyl)thio)acetamide (CAS 100377-22-8)
- Ethyl 3-(3-Aminophenyl)propionate (CAS 10039-64-2)
- N-(4-aminophenyl)-1-ethyl-1H-pyrazole-3-carboxamide (CAS 1004194-64-2)
Recommended Standards
- 1,2,3,4-Tetrachloroanthracene-9,10-dione (CAS 2841-29-4)
- 5-bromo-2-methoxy-4-(trifluoromethyl)benzoic acid (CAS 2090618-38-3)
- 3-[(2-nitrophenyl)amino]propanamide (CAS 36332-43-1)
- 2-Bromo-5-(oxazol-2-yl)benzaldehyde (CAS 176961-43-6)
- 1'-Methylspiro[indoline-3,3'-pyrrolidin]-2-one (CAS 66859-18-5)
- Chk2 Inhibitor (CAS 724708-21-8)
- Dienogest Impurity 17 (CAS 83196-58-1)
- tert-Butyl 3-fluoro-4-methylbenzoate (CAS 866625-11-8)
- (4-Chlorophenyl)(pyridin-2-yl)methanol (CAS 27652-89-7)
- Semaglutide impurity 258 (CAS CATO-C4X-2226258)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com