4-Bromo-2-(trifluoromethoxy)benzenesulfonamide CAS 749262-49-5
| CAS No. | 749262-49-5 |
| Molecular Formula | C7H5BrF3NO3S |
| Molecular Weight | 320.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-2-(trifluoromethoxy)benzenesulfonamide (C7H5BrF3NO3S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/bromine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
4-Bromo-2-(trifluoromethoxy)benzenesulfonamide (CAS 749262-49-5) is a high-purity analytical reference standard with the molecular formula C7H5BrF3NO3S and a molecular weight of 320.08 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 | C7H5BrF3NO3S |
| Molecular Weight | 320.08 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 2-Bromo-4-(trifluoromethoxy)benzenesulfonamide (CAS 1208077-56-8)
- 3-Bromo-4-(trifluoromethoxy)benzenesulfonamide (CAS 1208078-04-9)
- 5-Bromo-2-(2-fluoro-4-(trifluoromethyl)phenyl)pyridine (CAS 1257875-16-3)
- 5-Bromo-2-(trifluoromethoxy)benzene-1-sulfonamide (CAS 191276-46-7)
- 5-Bromo-2-(pyridin-2-yl)-6-(trifluoromethyl)pyrimidin-4-ol (CAS 338757-54-3)
- 6-Bromo-8-(trifluoromethyl)quinoline-2-carboxylic acid (CAS 1017436-27-9)
- 4-Bromo-6-(trifluoromethyl)quinoline-3-carboxylic acid (CAS 1378254-67-1)
- 4-Bromo-8-(trifluoromethyl)quinoline-3-carboxylic acid (CAS 1378260-43-5)
Recommended Standards
- 3-(4-Hydroxy-3-iodo-5-methoxyphenyl)acrylic acid (CAS 61223-30-1)
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- 2-(2-(Difluoromethoxy)-5-hydroxybenzoyl)pyridine (CAS 1261592-28-2)
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- 7-Methoxy-4-oxo-1,4-dihydroquinoline-2-carboxylic acid (CAS 77474-33-0)
- Ethyl 3,6,6-trimethyl-6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazine-2-carboxylate (CAS 2414325-72-5)
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