2-benzenesulfonamido-4-chlorobenzoic acid CAS 158580-85-9
| CAS No. | 158580-85-9 |
| Molecular Formula | C13H10ClNO4S |
| Molecular Weight | 311.74 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 2-benzenesulfonamido-4-chlorobenzoic acid (CAS 158580-85-9), a certified reference material (molecular formula C13H10ClNO4S, MW 311.74 g/mol) for analytical method development and quality control.
Based on its molecular formula C13H10ClNO4S, 2-benzenesulfonamido-4-chlorobenzoic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 311.74 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 2-benzenesulfonamido-4-chlorobenzoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C13H10ClNO4S |
| Molecular Weight | 311.74 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related benzenesulfonamido Standards
- 2-benzenesulfonamido-5-chlorobenzoic acid (CAS 138964-58-6)
- 2-Benzenesulfonamido-4-methanesulfonylbutanoic acid (CAS 497141-51-2)
- 3-Benzenesulfonamido-3-[4-(propan-2-yl)phenyl]propanoic acid (CAS 861207-56-9)
- 2-Benzenesulfonamido-4-methylpentanoic acid (CAS 1374962-72-7)
- 2-Benzenesulfonamido-3-methylbutanoic acid (CAS 85849-94-1)
- 2-Benzenesulfonamido-2-methylpropanimidamide (CAS 1342383-97-4)
Recommended Standards
- 3-[(4-chlorophenyl)sulfamoyl]benzoic acid (CAS 147410-78-4)
- 2-(4-Chlorobenzenesulfonamido)benzoic acid (CAS 51012-31-8)
- 4-(Benzyloxy)-6-formylpyridine-2-sulfonyl chloride (CAS 1393558-85-4)
- 2-Chloro-5-(phenylsulfamoyl)benzoic acid (CAS 68189-34-4)
- Cinoxacin-D5 (CAS 2732985-25-8)
- (1R,2S)-2-Methyl-4-oxocyclohexane-1-carboxylicacid (CAS 73831-00-2)
- 4-Trifluoromethanesulfinylbenzoic acid (CAS 948-39-0)
- Ethyl 1,5-diphenyl-1H-pyrazole-3-carboxylate (CAS 17355-75-8)
- 4,6-difluoro-1H-indazole (CAS 885520-26-3)
- (E)-2-((methoxyimino)methyl)-N1,N3-di-m-tolylmalonamide (CAS 400088-01-9)
- (2-Bromo-[1,2,4]triazolo[1,5-a]pyridin-6-yl)methanol (CAS 1795232-66-4)
- DL-Phenylmercapturic Acid (CAS 20640-68-0)
- (S)-6,9-difluoro-3-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (CAS 2408686-87-1)
- Semaglutide impurity 24 (CAS CATO-C4X-222624)
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