2-[[(5-Chloro-2-thienyl)sulfonyl]amino]benzoic acid CAS 327979-67-9
| CAS No. | 327979-67-9 |
| Molecular Formula | C11H8ClNO4S2 |
| Molecular Weight | 317.77 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, 2-[[(5-Chloro-2-thienyl)sulfonyl]amino]benzoic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 317.77 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
2-[[(5-Chloro-2-thienyl)sulfonyl]amino]benzoic acid (CAS 327979-67-9) is a high-purity analytical reference standard with the molecular formula C11H8ClNO4S2 and a molecular weight of 317.77 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C11H8ClNO4S2 |
| Molecular Weight | 317.77 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
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Recommended Standards
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- Sulfonium, tris[(1,1-dimethylethyl)phenyl]-, 1,1,1-trifluoromethanesulfonate (CAS 134708-14-8)
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