2-Bromo-5-methylbenzene-1-sulfonamide CAS 56919-21-2
| CAS No. | 56919-21-2 |
| Molecular Formula | C7H8BrNO2S |
| Molecular Weight | 250.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H8BrNO2S, 2-Bromo-5-methylbenzene-1-sulfonamide contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 250.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 2-Bromo-5-methylbenzene-1-sulfonamide (CAS 56919-21-2), a certified reference material (molecular formula C7H8BrNO2S, MW 250.11 g/mol) for analytical method development and quality control.
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 | C7H8BrNO2S |
| Molecular Weight | 250.11 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.) | 1973 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 2-Bromo-5-isopropylthiazole-4-carboxylic acid (CAS 1015936-68-1)
- 3-Bromo-2-methylbenzenesulfonamide (CAS 1032507-35-9)
- Ethyl 5-bromo-2-methylthiazole-4-carboxylate (CAS 1047675-70-6)
- 3-Bromo-2-methyl-6-(methylsulfonyl)pyridine (CAS 1104451-37-7)
- 4-Bromo-2-methylbenzenesulfonamide (CAS 116340-67-1)
- Methyl 2-bromo-4-ethylthiazole-5-carboxylate (CAS 1171125-06-6)
- 2-Bromo-5-(ethylsulfonyl)pyridine (CAS 1227384-81-7)
- 5-Bromo-N-methoxy-N-methylthiophene-2-carboxamide (CAS 1236066-84-4)
Recommended Standards
- 2-Bromo-5-(methylsulphonyl)aniline (CAS 942474-24-0)
- 2-Bromo-N-methylbenzenesulfonamide (CAS 98192-14-4)
- 2-Bromo-4-propylthiazole-5-carboxylic acid (CAS 81569-64-4)
- 3-(Bromomethyl)benzenesulfonamide (CAS 220798-52-7)
- 2-(((2-Nitrophenyl)thio)amino)propanoic acid (CAS 5879-39-0)
- Ethyl 1-(4-chlorophenyl)-4-hydroxy-6-oxo-1,6-dihydropyridazine-3-carboxylate (CAS 339030-76-1)
- 1-Bromo-3-(trifluoromethyl)cyclohexane (CAS 1344381-85-6)
- Rasagiline Impurity 15 (CAS CATO-C4X-191315)
- (3-Bromophenyl)(2,2-difluoroethyl)sulfane (CAS 885267-08-3)
- 5-Methyl-N-(4-methylbenzylidene)isoxazol-3-amine (CAS 112633-38-2)
- 1-(4-Chlorophenyl)-3-(4-fluorophenyl)thiourea (CAS 370-26-3)
- Methyl 5-(hydroxymethyl)-3-methylfuran-2-carboxylate (CAS 209853-88-3)
- 6-((2-(Benzo[d][1,3]dioxol-5-yl)-2-oxoethyl)thio)-3,4-dihydro-2H-1,4-ethano-1,5-naphthyridine-7-carbonitrile (CAS 939893-54-6)
- semaglutide (CAS 782487-28-9)
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