4-Chloropyridine-3-sulfonic acid CAS 51498-38-5
Purity >95%In StockPharmaceutical Standards
| CAS No. | 51498-38-5 |
| Molecular Formula | C5H4ClNO3S |
| Molecular Weight | 193.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chloropyridine-3-sulfonic acid (CAS 51498-38-5) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C5H4ClNO3S. Molecular weight: 193.61 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C5H4ClNO3S |
| Molecular Weight | 193.61 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloropyridine Standards
- 2-Chloropyridine-4-sulfonic acid (CAS 1209458-81-0)
- 6-Chloropyridine-2-sulfonic acid (CAS 133145-15-0)
- 6-Chloropyridine-3-sulfonic acid (CAS 17624-08-7)
- 2-Chloropyridine-3-sulfonic acid (CAS 6602-56-8)
- 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)
Recommended Standards
- 5-chloropyrimidine-2-sulfonamide (CAS 873398-77-7)
- (2,4-DIOXO-1,3-THIAZOLIDIN-5-YL)ACETYL CHLORIDE 51226-17-6 (CAS 51226-17-6)
- Vonoprazan Impurity 170 (CAS 2358783-64-7)
- Ethyl 7-bromo-1-(2-morpholinoethyl)-3-(3-(naphthalen-1-yloxy)propyl)-1H-indole-2-carboxylate (CAS 1073493-89-6)
- 3-Amino-4,6-dimethyl-thieno[2,3-b]pyridine-2-carbonitrile (CAS 52505-57-4)
- N-(2,4-Difluorophenyl)-2-bromobenzamide (CAS 314025-94-0)
- 1-(3,5-difluorophenyl)-3-(dimethylamino)prop-2-en-1-one (CAS 154258-41-0)
- 2H-Isoindole-1-sulfonic acid (CAS 569650-95-9)
- N-Heptane (CAS 142-82-5)
- (β-Asp5)-Delta-Sleep Inducing Peptide (CAS 82602-88-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com