3,5-Bis(thiophene-2-sulfonamido)benzoic acid CAS 327091-20-3
| CAS No. | 327091-20-3 |
| Molecular Formula | C15H12N2O6S4 |
| Molecular Weight | 444.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
3,5-Bis(thiophene-2-sulfonamido)benzoic acid (CAS 327091-20-3), molecular formula C15H12N2O6S4 and molecular weight 444.53 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H12N2O6S4, 3,5-Bis(thiophene-2-sulfonamido)benzoic acid contains a flavonoid core, 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 444.53 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C15H12N2O6S4 |
| Molecular Weight | 444.53 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 4 |
Related Bis Standards
- 1-(2-(Thiophene-2-carbonyl)-1,2,3,4-tetrahydroisoquinolin-7-yl)-3-(4-(trifluoromethyl)phenyl)urea (CAS 1209828-91-0)
- N-(2-(1-(Thiophene-2-carbonyl)-5-(o-tolyl)-4,5-dihydro-1H-pyrazol-3-yl)phenyl)methanesulfonamide (CAS 923194-39-2)
- N-(2-(1-(Thiophene-2-carbonyl)-5-(p-tolyl)-4,5-dihydro-1H-pyrazol-3-yl)phenyl)methanesulfonamide (CAS 923244-15-9)
- N-(4-((3-(Thiophene-2-sulfonamido)quinoxalin-2-yl)amino)phenyl)acetamide (CAS 714920-64-6)
- 4',4'''-(Thiophene-2,5-diyl)bis(([1,1'-biphenyl]-4-carbonitrile)) (CAS 868403-91-2)
- 4-{[4-(thiophene-2-carbonyloxy)phenyl]sulfanyl}phenyl thiophene-2-carboxylate (CAS 329078-94-6)
- Methyl 3-(2-{[2-(thiophene-2-amido)phenyl]sulfanyl}acetamido)thiophene-2-carboxylate (CAS 477887-58-4)
- 3,5-Bis-(thiophene-2-sulfonylamino)-benzoic acid methyl ester (CAS 380344-13-8)
Recommended Standards
- 2-Methyl-5-(morpholine-4-sulfonyl)-n-[4-(pyridin-4-yl)-1,3-thiazol-2-yl]benzamide (CAS 869633-94-3)
- 4-Methyl-3-(morpholine-4-sulfonyl)-n-[4-(pyridin-2-yl)-1,3-thiazol-2-yl]benzamide (CAS 848373-17-1)
- 2-(Tert-butyl)-2-(2-(3-methylbenzamido)benzoyl)-N-phenylhydrazine-1-carboxamide (CAS 866009-76-9)
- 6-{2-[3-(2,5-dimethyl-1H-pyrrol-1-yl)thiophen-2-yl]pyrazolo[1,5-a]pyrimidin-7-yl}-5H-[1,3]thiazolo[3,2-a]pyrimidin-5-one (CAS 439120-63-5)
- 1-(3-{imidazo[1,2-a]pyridin-2-yl}phenyl)-1H-pyrrole (CAS 861206-66-8)
- (1-Methyl-1H-imidazol-4-yl)methylamine (CAS 486414-83-9)
- 3-Fluoro-4-((2-methylpiperidin-1-yl)methyl)benzaldehyde (CAS 1443345-75-2)
- 4-((4-Aminobenzyl)oxy)butan-1-ol (CAS 1248091-66-8)
- Methyl 1-allyl-1H-1,2,3-triazole-5-carboxylate (CAS 339365-26-3)
- (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(2,5,7-tri-tert-butyl-1H-indol-3-yl)propanoic acid (CAS 376592-37-9)
- 4-Phenoxy-1H-pyrazole (CAS 1429903-12-7)
- (5-Methyl-2H-indazol-3-yl)methanol (CAS 518990-04-0)
- 6-Bromopteridine (CAS 1260880-75-8)
- Vialox Peptide(Pentapeptide-3) diacetate (CAS 725232-44-0)
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