3-Bromo-4-cyano-5-nitrobenzenesulfonyl chloride CAS 1805102-35-5
| CAS No. | 1805102-35-5 |
| Molecular Formula | C7H2BrClN2O4S |
| Molecular Weight | 325.52 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.
3-Bromo-4-cyano-5-nitrobenzenesulfonyl chloride (CAS 1805102-35-5), molecular formula C7H2BrClN2O4S and molecular weight 325.52 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system, 3-Bromo-4-cyano-5-nitrobenzenesulfonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 325.52 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C7H2BrClN2O4S |
| Molecular Weight | 325.52 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 2-Bromo-5-cyano-4-nitrobenzenesulfonyl chloride (CAS 1805190-38-8)
- 6-Bromo-3-cyano-2-nitrobenzenesulfonyl chloride (CAS 1805249-19-7)
- 2-Bromo-5-cyano-3-nitrobenzenesulfonyl chloride (CAS 1805581-81-0)
- 5-Bromo-4-cyano-2-nitrobenzenesulfonyl chloride (CAS 1805597-22-1)
- 3-Bromo-2-cyano-5-nitrobenzenesulfonyl chloride (CAS 1806061-96-0)
- 4-Bromo-2-cyano-6-nitrobenzene-1-sulfonyl chloride (CAS 1806062-04-3)
- 3-Bromo-2-cyano-4-nitrobenzenesulfonyl chloride (CAS 1807170-67-7)
- 4-Bromo-2-cyano-5-nitrobenzenesulfonyl chloride (CAS 1807170-77-9)
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