3-(Chlorosulfonyl)-2-nitrobenzoic acid CAS 1864062-56-5
| CAS No. | 1864062-56-5 |
| Molecular Formula | C7H4ClNO6S |
| Molecular Weight | 265.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-(Chlorosulfonyl)-2-nitrobenzoic acid (CAS 1864062-56-5), molecular formula C7H4ClNO6S and molecular weight 265.63 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carbohydrate-derived structure, an amide group, a sulfone group, chlorine substitution, 3-(Chlorosulfonyl)-2-nitrobenzoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 265.63 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H4ClNO6S |
| Molecular Weight | 265.63 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chlorosulfonyl Standards
- 3-(chlorosulfonyl)-4-nitrobenzoic acid (CAS 871243-31-1)
- 3-(Chlorosulfonyl)-5-nitrobenzoic acid (CAS 860596-66-3)
- 4-(Chlorosulfonyl)-2-nitrobenzoic Acid (CAS 54090-40-3)
- 4-(chlorosulfonyl)-3-nitrobenzoic acid (CAS 32571-65-6)
- 5-(Chlorosulfonyl)-2-nitrobenzoic acid (CAS 98555-64-7)
- Methyl 2-(chlorosulfonyl)-6-methoxyisonicotinate (CAS 1393547-64-2)
- Methyl 4-(chlorosulfonyl)-6-methoxypicolinate (CAS 1393560-70-7)
- Ethyl 4-(chlorosulfonyl)-3,5-dimethyl-1H-pyrrole-2-carboxylate (CAS 368869-88-9)
Recommended Standards
- Methyl (2E)-3-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]prop-2-enoate (CAS 400075-22-1)
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- 1-(8-Chloro-6-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridin-3-yl)ethan-1-ol (CAS 1823182-85-9)
- 1,3,5-Tris(chloromethyl)-2,4,6-trimethylbenzene (CAS 3849-01-2)
- Ethyl 5-(pyridin-4-yl)-1h-pyrazole-3-carboxylate (CAS 911461-42-2)
- 5-Bromo-N-(4-chlorophenyl)pyridin-3-amine (CAS 767342-23-4)
- 5H,7H,8H-pyrano[4,3-d]pyrimidin-2-amine hydrochloride (CAS 2059971-77-4)
- 1,3-Di-p-tolylisobenzofuran (CAS 62422-95-1)
- 6-Methyl-7-phenyl-1H-pyrrolo[3,4-c]pyridine-1,3(2H)-dione (CAS 62437-18-7)
- 3,4,4-Trifluoro-3-methylbenzophenone (CAS 951886-78-5)
- Benoxaprofen-13C,d3 (CAS 1329840-53-0)
- Ethyl 2-{[5-(trifluoromethyl)pyridin-2-yl]sulfonyl}propanoate (CAS 338962-51-9)
- 6-Morpholino-9H-purin-2-amine (CAS 18202-52-3)
- Liraglutide-d8 Tritrifluoroacetate (CAS CATO-C4X-199223)
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