2,5-Dibromothiophene-3-sulfonamide CAS 7182-36-7
| CAS No. | 7182-36-7 |
| Molecular Formula | C4H3Br2NO2S2 |
| Molecular Weight | 321.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,5-Dibromothiophene-3-sulfonamide (C4H3Br2NO2S2) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
2,5-Dibromothiophene-3-sulfonamide (CAS 7182-36-7), molecular formula C4H3Br2NO2S2 and molecular weight 321.01 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.
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 | C4H3Br2NO2S2 |
| Molecular Weight | 321.01 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Dibromothiophene Standards
- 4,5-Dibromothiophene-2-sulfonamide (CAS 77893-69-7)
- Ethyl 3,4-dibromothiophene-2-carboxylate (CAS 153562-67-5)
- Ethyl 4,5-dibromothiophene-3-carboxylate (CAS 1823905-03-8)
- Ethyl 2,5-dibromothiophene-3-carboxylate (CAS 289470-44-6)
- Ethyl 3,5-dibromothiophene-2-carboxylate (CAS 62224-22-0)
- Ethyl 4,5-dibromothiophene-2-carboxylate (CAS 62224-25-3)
- 2,5-Dibromothiophene-3,4-dicarboxylic Acid (CAS 190723-12-7)
- 4,5-Dibromothiophene-2-carbothioic O-acid (CAS 2484692-41-1)
Recommended Standards
- 1-(5,6-Dibromopyridin-3-yl)piperazine (CAS 412347-44-5)
- 2-Bromo-N-(4-bromo-2,3-dimethylphenyl)acetamide (CAS 895854-22-5)
- 2-Bromo-4,5-bis(trifluoromethyl)benzaldehyde (CAS 1805597-25-4)
- 2-Bromo-N-(4-bromo-2,6-dimethylphenyl)acetamide (CAS 886008-89-5)
- ethyl 7H-pyrrolo[2,3-d]pyrimidine-4-carboxylate (CAS 915142-91-5)
- (4-(Methylselanyl)phenyl)boronic acid (CAS 181135-61-5)
- 5-Methyl-1H-imidazole-2-carboxylic acid hydrochloride (CAS 1955547-78-0)
- 1-Bromo-2-methyl-6-(methylsulfonyl)hexane (CAS 1341294-24-3)
- Tofacitinib Impurity 128 HCl (CAS 1206824-67-0)
- 1-(5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)furan-3-yl)-1H-pyrazole (CAS 2223039-64-1)
- 2-(2-Bromo-4-methoxyphenyl)acetaldehyde (CAS 1379317-71-1)
- 2-((1H-Pyrrol-1-yl)sulfonyl)benzoic acid (CAS 827024-12-4)
- 3-Iodo-1-methyl-6,7-dihydro-5H-cyclopenta[c]pyridine-6-carboxylic acid (CAS 2714000-75-4)
- Semaglutide Impurity 150 xTFA (CAS CATO-C4X-2226150)
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