2-Chloro-3-methyl-5-nitrobenzenesulfonamide CAS 916737-72-9
| CAS No. | 916737-72-9 |
| Molecular Formula | C7H7ClN2O4S |
| Molecular Weight | 250.66 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, an aromatic ring system, 2-Chloro-3-methyl-5-nitrobenzenesulfonamide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 250.66 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
2-Chloro-3-methyl-5-nitrobenzenesulfonamide (CAS 916737-72-9), molecular formula C7H7ClN2O4S and molecular weight 250.66 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-Chloro-3-methyl-5-nitrobenzenesulfonamide meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H7ClN2O4S |
| Molecular Weight | 250.66 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.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-Chloro-N-(3-fluorophenyl)isonicotinamide (CAS 1019323-09-1)
- 2-Chloro-N-(4-fluorophenyl)isonicotinamide (CAS 1019383-51-7)
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- Methyl 2-Chloro-5-sulfamoylnicotinate (CAS 1118787-24-8)
- 5-(3-Chloro-2-fluorophenyl)nicotinamide (CAS 1125445-55-7)
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- 5-(4-Chloro-2-fluorophenyl)nicotinamide (CAS 1346691-88-0)
Recommended Standards
- 2-(2-Chloropyrimidin-4-yl)-1-(4-fluorophenyl)ethanone (CAS 216529-49-6)
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- Methyl 3-(chlorosulfonyl)-4-hydroxybenzoate (CAS 1889107-61-2)
- 2-Chloro-5-methyl-4-nitrobenzenesulfonamide (CAS 871876-40-3)
- 3-((2,4-Dimethylphenoxy)methyl)aniline hydrochloride (CAS 1417570-04-7)
- 5-{[(E)-(4-Fluorophenyl)methylidene]amino}-6-imino-2-oxo-1-phenyl-1,2,3,6-tetrahydro-4-pyrimidinecarbonitrile (CAS 937604-56-3)
- 1-(3-Bromo-5-fluorobenzyl)-4-methylpiperidine (CAS 1518625-75-6)
- 3-(4-Bromo-7-fluoro-1-oxoisoindolin-2-yl)piperidine-2,6-dione (CAS 2438239-34-8)
- 3-(2-Chloro-5-(trifluoromethyl)pyrimidin-4-yl)-1-methyl-1H-indole (CAS 1903753-93-4)
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- 2,6-Dimethylbenzyl alcohol (CAS 62285-58-9)
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