4,5-Dibromothiophene-2-sulfonamide CAS 77893-69-7
| CAS No. | 77893-69-7 |
| Molecular Formula | C4H3Br2NO2S2 |
| Molecular Weight | 321.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4,5-Dibromothiophene-2-sulfonamide.
4,5-Dibromothiophene-2-sulfonamide (CAS 77893-69-7), molecular formula C4H3Br2NO2S2 and molecular weight 321.01 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C4H3Br2NO2S2, 4,5-Dibromothiophene-2-sulfonamide contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 321.01 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.
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), 4,5-Dibromothiophene-2-sulfonamide 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 | 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.) | 1979 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Dibromothiophene Standards
- 2,5-Dibromothiophene-3-sulfonamide (CAS 7182-36-7)
- 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
- 4-(3,5-Dibromophenyl)morpholine (CAS 27173-18-8)
- 2322-46-5 2-Bromo-N-(4-bromophenyl)-2-methylpropanamide MFCD01069116 (CAS 2322-46-5)
- 2-Bromo-N-(4-bromophenyl)butanamide (CAS 899710-09-9)
- Lidocaine Impurity 101 (CAS CATO-C4X-1679101)
- 2-((1-Benzylpyrrolidin-2-yl)methoxy)ethanol (CAS 1353987-69-5)
- 2-(4,11-Dimethyl-2-oxo-6,7,8,9-tetrahydro-2H-benzofuro[3,2-g]chromen-3-yl)-N-(3-(dimethylamino)propyl)acetamide (CAS 864821-39-6)
- 5-(4-(Isopropylsulfonyl)benzyl)-1,3,4-oxadiazol-2-amine (CAS 1251577-69-1)
- 4-Phenylnicotinonitrile (CAS 39065-51-5)
- Nemonoxacin Impurity 87 (CAS CATO-C4X-312887)
- 4-bromo-2,2-dimethyl-2,3-dihydro-1H-inden-1-amine (CAS 1780310-91-9)
- 2-Chloromethyl-3,5,6,7-tetrahydro-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one (CAS 91225-70-6)
- 3,5-Dimethyl-4-phenylsulfanyl-1H-pyrazole (CAS 127788-13-0)
- Vilazodone Impurity 5 (CAS 2044706-63-8)
- Semaglutide impurity 211 (CAS CATO-C4X-2226211)
Why CATO?
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