2-chloropyridine-4-sulfonamide CAS 1182767-38-9
| CAS No. | 1182767-38-9 |
| Molecular Formula | C5H11ClN2O2S |
| Molecular Weight | 198.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-chloropyridine-4-sulfonamide (CAS 1182767-38-9), molecular formula C5H11ClN2O2S and molecular weight 198.67 g/mol, is a CATO reference standard with documented purity and traceability.
2-chloropyridine-4-sulfonamide (C5H11ClN2O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C5H11ClN2O2S |
| Molecular Weight | 198.67 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 DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related chloropyridine Standards
- 2-chloropyridine-3-sulfonamide (CAS 38025-93-3)
- 4-Chloropyridine-2,6-dicarboxamide (CAS 60494-50-0)
- Ethyl 6-Chloropyridine-3-acetate (CAS 197376-47-9)
- 1,1'-(4-Chloropyridine-2,6-diyl)diethanone (CAS 195967-10-3)
- 5-Chloropyridine-3,4-dicarboxylic acid (CAS 101420-62-6)
- 3-Chloropyridine-2,5-dicarboxylic acid (CAS 106014-20-4)
- 4-Chloropyridine-2,5-dicarboxylic acid (CAS 1227945-07-4)
- 6-Chloropyridine-2,5-dicarboxylic acid (CAS 1251953-02-2)
Recommended Standards
- 4-Chloro-N-methyl-2-benzothiazolamine (CAS 118221-28-6)
- 2-Chloro-6-ethylthieno[2,3-d]pyrimidine (CAS 1225634-75-2)
- 1,4-Dimethyl-1H-pyrazole-5-sulfonyl chloride (CAS 1174834-52-6)
- 4-Chloro-2,6-dimethylthieno[3,2-d]pyrimidine (CAS 1233025-67-6)
- Pyrimidin-4-yl-acetic acid (CAS 325491-53-0)
- 2-((5-((4-Methoxyphenoxy)methyl)-4-phenyl-4H-1,2,4-triazol-3-yl)thio)-N-(4-methyl-3-nitrophenyl)acetamide (CAS 332912-69-3)
- 4-Bromo-2,7-naphthyridin-1-amine (CAS 959558-28-2)
- Carbidopa Impurity 25 (CAS CATO-C4X-231025)
- 2-(2-Amino-5-(difluoromethyl)pyridin-3-yl)acetonitrile (CAS 1805259-57-7)
- 2-Acetamido-N1-(4-fluorophenyl)-N3-(4-methoxyphenyl)malonamide (CAS 866018-01-1)
- 1-[(3S,6S)-6-[(Benzenesulfonyl)oxy]-hexahydrofuro[3,2-b]furan-3-yl]-1H-1,2,3-triazole-4,5-dicarboxylic acid (CAS 1276015-72-5)
- 4-Ethyl-N-methyloctan-1-amine (CAS 1272935-67-7)
- 3,5-Dibromo-2-fluorophenol (CAS 1783727-50-3)
- Semaglutide Impurity 192 (CAS CATO-C4X-2226192)
Why CATO?
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