2-Chloro-5-nitropyridine-3-sulfonyl chloride CAS 6684-05-5
| CAS No. | 6684-05-5 |
| Molecular Formula | C5H2Cl2N2O4S |
| Molecular Weight | 257.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H2Cl2N2O4S, 2-Chloro-5-nitropyridine-3-sulfonyl chloride contains a carbohydrate-derived structure, an amide group, a sulfone group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 257.05 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
2-Chloro-5-nitropyridine-3-sulfonyl chloride (CAS 6684-05-5) is a high-purity analytical reference standard with the molecular formula C5H2Cl2N2O4S and a molecular weight of 257.05 g/mol.
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-Chloro-5-nitropyridine-3-sulfonyl 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 | C5H2Cl2N2O4S |
| Molecular Weight | 257.05 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 |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 6-Chloro-4-nitropyridine-2-sulfonyl chloride (CAS 1393544-73-4)
- 6-Chloro-5-nitropyridine-3-sulfonyl chloride (CAS 62009-39-6)
- 5-Chloro-1-(4-chlorophenyl)-1H-pyrazole-3-carboxylic acid (CAS 121562-03-6)
- 4-Chloro-3-(4-chlorophenyl)-1H-pyrazole-5-carboxylic acid (CAS 1354896-34-6)
- 4-Chloro-2-(3-chlorophenyl)-5-hydroxypyridazin-3(2H)-one (CAS 336109-39-8)
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- 6-Chloro-8-(chloromethyl)-4-oxo-4H-1-benzopyran-3-carboxaldehyde (CAS 726152-47-2)
- 2-Chloro-6-(chloromethyl)-4-(difluoromethyl)-3-nitropyridine (CAS 1804370-98-6)
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- Naproxen Impurity 34 (CAS CATO-C4X-170834)
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