2-Bromo-4-(trifluoromethyl)benzene-1-sulfonyl chloride CAS 54403-98-4
| CAS No. | 54403-98-4 |
| Molecular Formula | C7H3BrClF3O2S |
| Molecular Weight | 323.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-Bromo-4-(trifluoromethyl)benzene-1-sulfonyl chloride.
2-Bromo-4-(trifluoromethyl)benzene-1-sulfonyl chloride (CAS 54403-98-4), molecular formula C7H3BrClF3O2S and molecular weight 323.51 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine/bromine substitution, an aromatic ring system, 2-Bromo-4-(trifluoromethyl)benzene-1-sulfonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 323.51 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.
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 | C7H3BrClF3O2S |
| Molecular Weight | 323.51 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1972 |
| Halogen Content | F/Cl/Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 5-Bromo-2-(trifluoromethyl)benzenesulfonyl chloride (CAS 1375065-87-4)
- 2-Bromo-6-(trifluoromethyl)benzene-1-sulfonyl chloride (CAS 1431291-88-1)
- 2-Bromo-5-(trifluoromethyl)benzenesulfonyl chloride (CAS 176225-08-4)
- 4-Bromo-2-(trifluoromethyl)benzene-1-sulfonyl chloride (CAS 176225-10-8)
- 2-Bromo-3-(trifluoromethyl)-benzenesulfonyl chloride (CAS 55695-21-1)
- 3-Bromo-5-(trifluoromethyl)benzenesulphonylchloride (CAS 351003-46-8)
- 4-Bromo-3-(trifluoromethyl)benzene-1-sulfonyl chloride (CAS 351003-47-9)
- 6-Bromo-4-chloro-2-(difluoromethyl)-7-methoxyquinazoline (CAS 2883761-41-7)
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- 3-Methoxy-2-methyl-4H-chromen-4-one (CAS 147590-72-5)
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