2-Nitrobenzenesulfonyl Chloride CAS 1694-92-4
| CAS No. | 1694-92-4 |
| Molecular Formula | C6H4ClNO4S |
| Molecular Weight | 221.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 2-Nitrobenzenesulfonyl Chloride (C6H4ClNO4S) is characterized by an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
2-Nitrobenzenesulfonyl Chloride (CAS 1694-92-4), molecular formula C6H4ClNO4S and molecular weight 221.62 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 2-Nitrobenzenesulfonyl Chloride under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H4ClNO4S |
| Molecular Weight | 221.62 g/mol |
| Purity | >95% |
| 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.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Nitrobenzenesulfonyl Standards
- 4-Methyl-3-nitrobenzenesulfonyl fluoride (CAS 1535-47-3)
- o-Nitrobenzenesulfonyl hydrazide, 97% (CAS 5906-99-0)
- 2-(4-nitrobenzenesulfonyl)ethan-1-ol (CAS 21386-32-3)
- 2-nitrobenzenesulfonyl fluoride (CAS 433-98-7)
- 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)
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- 2-((5-Ethyl-4-(naphthalen-1-yl)-4H-1,2,4-triazol-3-yl)thio)acetic acid (CAS 886498-37-9)
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Why CATO?
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