4-Chloropyridine-3-sulfonamide CAS 33263-43-3
| CAS No. | 33263-43-3 |
| Molecular Formula | C5H5ClN2O2S |
| Molecular Weight | 192.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 4-Chloropyridine-3-sulfonamide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 192.62 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.
CATO supplies 4-Chloropyridine-3-sulfonamide (CAS 33263-43-3), a certified reference material (molecular formula C5H5ClN2O2S, MW 192.62 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-Chloropyridine-3-sulfonamide 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 | C5H5ClN2O2S |
| Molecular Weight | 192.62 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 DMSO, DMF, methanol |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloropyridine Standards
- 5-Chloropyridine-3-sulfonamide (CAS 1334148-60-5)
- 6-chloropyridine-2-sulfonamide (CAS 1823272-65-6)
- 5-Chloropyridine-2-sulfonamide (CAS 19506-41-3)
- 3-Chloropyridine-2-sulfonamide (CAS 96009-29-9)
- 4-Chloropyridine-2-Sulfonamide (CAS 57724-91-1)
- 4-Chloropyridine-3-sulfonamide hydrochloride (CAS 777854-85-0)
- 2-Chloropyridine-4-sulfonic acid (CAS 1209458-81-0)
- 6-Chloropyridine-2-sulfonic acid (CAS 133145-15-0)
Recommended Standards
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- 4-Chlorobenzenesulfonic Acid (CAS 98-66-8)
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Why CATO?
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