3-Methyl-5-nitrobenzenesulfonyl chloride CAS 342422-23-5
| CAS No. | 342422-23-5 |
| Molecular Formula | C7H6ClNO4S |
| Molecular Weight | 235.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Methyl-5-nitrobenzenesulfonyl chloride (C7H6ClNO4S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine 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.
3-Methyl-5-nitrobenzenesulfonyl chloride (CAS 342422-23-5), molecular formula C7H6ClNO4S and molecular weight 235.64 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C7H6ClNO4S |
| Molecular Weight | 235.64 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-Methyl-5-nitrobenzenesulfonyl Chloride (CAS 121-02-8)
- 2-methyl-3-nitrobenzenesulfonyl chloride (CAS 56682-04-3)
- 2-Methyl-6-nitrobenzenesulfonyl Chloride (CAS 56202-22-3)
- 3-Methyl-4-nitrobenzenesulfonyl Chloride (CAS 78726-75-7)
- 2-(4-nitrobenzenesulfonyl)ethan-1-ol (CAS 21386-32-3)
- 2-(2-Nitrobenzenesulfonyl)acetic acid (CAS 27489-27-6)
- 2-(4-Nitrobenzenesulfonyl)acetic acid (CAS 3937-94-8)
- 2-Nitrobenzenesulfonyl Chloride (CAS 1694-92-4)
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