2-Chloro-4-fluoro-n-methylbenzenesulfonamide CAS 1098391-40-2
| CAS No. | 1098391-40-2 |
| Molecular Formula | C7H7ClFNO2S |
| Molecular Weight | 223.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
2-Chloro-4-fluoro-n-methylbenzenesulfonamide (CAS 1098391-40-2), molecular formula C7H7ClFNO2S and molecular weight 223.65 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H7ClFNO2S, 2-Chloro-4-fluoro-n-methylbenzenesulfonamide contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 223.65 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C7H7ClFNO2S |
| Molecular Weight | 223.65 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- N-(2-chloro-4-fluorophenyl)methanesulfonamide (CAS 1001026-51-2)
- (4-Chloro-2-fluorophenyl)methanesulfonamide (CAS 1001026-53-4)
- 4-Chloro-2-fluoro-n-methylbenzenesulfonamide (CAS 1089634-90-1)
- n-(4-Chloro-3-fluorophenyl)methanesulfonamide (CAS 1097107-44-2)
- 3-Chloro-2-fluoro-n-methylbenzenesulfonamide (CAS 1099029-88-5)
- 2-Chloro-4-fluoro-5-methylbenzene-1-sulfonamide (CAS 1208077-19-3)
- 5-Chloro-4-fluoro-2-methylbenzenesulfonamide (CAS 1242339-14-5)
- (4-chloro-3-fluorophenyl)methanesulfonamide (CAS 1249978-53-7)
Recommended Standards
- Vonoprazan Fumarate Impurity 31 (CAS 2169267-53-0)
- (S)-Chloromethyl 2-((methoxycarbonyl)amino)-3-methylbutanoate (CAS 1332329-90-4)
- 6-Chloro-N-(4-fluorophenyl)pyrazin-2-amine (CAS 642459-07-2)
- 5-(Chloromethyl)-2-fluorobenzenesulfonamide (CAS 1379371-14-8)
- 1-N-(4,5-dihydro-1H-imidazol-2-yl)benzene-1,4-diamine dihydrochloride (CAS 272792-01-5)
- 6-Bromo-2H-pyrazino[2,3-b][1,4]oxazin-3(4H)-one (CAS 2376926-19-9)
- n-(2-Chlorobenzyl)pyrimidin-2-amine (CAS 23676-58-6)
- 1H-Benzoimidazole-2-thiol (CAS 134469-07-1)
- tert-Butyl (1-oxo-1-(2,4,5-trifluorophenyl)pent-4-yn-2-yl)carbamate (CAS 1844874-07-2)
- Methyl 3-[(4-chlorobenzenesulfonyl)oxy]-4-nitrobenzoate (CAS 297149-80-5)
- 1-(2,2,2-Trifluoroethyl)-4,5,6,7-tetrahydro-1h-pyrazolo[4,3-c]pyridine hydrochloride (CAS 2680614-96-2)
- 4-Chloro-N-(2-methylquinolin-6-yl)-2-nitrobenzamide (CAS 832102-28-0)
- Iron(III) 4-Methylbenzenesulfonate (CAS 77214-82-5)
- Semaglutide impurity 77 (CAS CATO-C4X-222677)
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