2-Chloro-5-sulfamoylbenzoic acid CAS 97-04-1
| CAS No. | 97-04-1 |
| Molecular Formula | C7H6ClNO4S |
| Molecular Weight | 235.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 235.64 g/mol gives 2-Chloro-5-sulfamoylbenzoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Chloro-5-sulfamoylbenzoic acid (CAS 97-04-1), molecular formula C7H6ClNO4S and molecular weight 235.64 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-Chloro-5-sulfamoylbenzoic acid (C7H6ClNO4S) 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C7H6ClNO4S |
| Molecular Weight | 235.64 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-Chloro-5-(2-fluorobenzoyl)pyridine (CAS 1187167-94-7)
- 2-Chloro-7-(difluoromethoxy)benzo[d]thiazole (CAS 1261629-26-8)
- (3-Chloro-5-fluorophenyl)(pyridin-2-yl)methanone (CAS 1261754-42-0)
- 2-Chloro-6-(difluoromethoxy)benzo[d]thiazole (CAS 1261786-73-5)
- (4-Chloro-3-fluorophenyl)(pyridin-2-yl)methanone (CAS 1261868-06-7)
- 5-(4-Chloro-2-fluorophenyl)nicotinaldehyde (CAS 1346691-91-5)
- 5-(4-Chloro-3-fluorophenyl)nicotinaldehyde (CAS 1346691-96-0)
- 5-(3-Chloro-2-fluorophenyl)nicotinaldehyde (CAS 1346692-07-6)
Recommended Standards
- 2-Chloro-4-methylsulfonyl-1-nitrobenzene (CAS 60854-81-1)
- 2-methyl-3-nitrobenzenesulfonyl chloride (CAS 56682-04-3)
- 2-Chloro-1-difluoromethoxy-4-isothiocyanato-benzene (CAS 865149-80-0)
- 2-methyl-4-nitro-benzenesulfonyl chloride (CAS 21320-90-1)
- {2-[(Phenylsulfonyl)amino]-1,3-thiazol-4-yl}acetic acid (CAS 62557-09-9)
- N-((1H-benzo[d][1,2,3]triazol-1-yl)methyl)pivalamide (CAS 157944-76-8)
- 5-Amino-1-(4-methoxyphenyl)-1H-pyrazole-4-carboxylic acid (CAS 14678-95-6)
- 1-(4-Fluoro-2-nitrophenyl)piperidine-4-carboxylic acid (CAS 648917-79-7)
- N-benzyl-2-methylbut-3-yn-2-amine (CAS 56862-41-0)
- 2,3-Dichlorobenzenesulfonic acid (CAS 93648-06-7)
- 1-Boc-3-fluoroazetidine-3-carbaldehyde (CAS 1374658-52-2)
- 2-Chloro-3,6-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol (CAS 1799612-36-4)
- 2-fluoroethyl methanesulfonate (CAS 461-31-4)
- Semaglutide Impurity 12 (CAS CATO-C4X-222612)
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