2-Bromo-n-methyl-4-nitrobenzenesulfonamide CAS 273208-08-5
| CAS No. | 273208-08-5 |
| Molecular Formula | C7H7BrN2O4S |
| Molecular Weight | 295.11 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-Bromo-n-methyl-4-nitrobenzenesulfonamide (CAS 273208-08-5) is a high-purity analytical reference standard with the molecular formula C7H7BrN2O4S and a molecular weight of 295.11 g/mol.
Structurally, 2-Bromo-n-methyl-4-nitrobenzenesulfonamide (C7H7BrN2O4S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 295.11 g/mol, it falls into the medium-molecular-weight range. 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 | C7H7BrN2O4S |
| Molecular Weight | 295.11 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.) | 2025 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Bromo Standards
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Recommended Standards
- (4-((1,4-Dioxa-8-azaspiro[4.5]Decan-8-yl)methyl)-2-fluorophenyl)boronic acid (CAS 1704121-92-5)
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- (3-((1,4-Dioxa-8-azaspiro[4.5]Decan-8-yl)methyl)-5-fluorophenyl)boronic acid (CAS 1704074-61-2)
- (4-((1,4-Dioxa-8-azaspiro[4.5]Decan-8-yl)methyl)-3-fluorophenyl)boronic acid (CAS 1704074-38-3)
- 4-Bromo-2-methoxybenzenethiol (CAS 145915-30-6)
- Fmoc-3-amino-3-(4-bromophenyl)propionic acid (CAS 269078-76-4)
- 5-Amino-6-chloropyridazine-4-carbonitrile (CAS 212138-89-1)
- 6,7-Dimethoxy-2-phenyl-4H-benzo[d][1,3]oxazin-4-one (CAS 31164-96-2)
- 3-Amino-2-(o-tolyl)quinazolin-4(3H)-one (CAS 63002-69-7)
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