2,5-Dibromothiophene-3-sulfonyl chloride CAS 70374-40-2
| CAS No. | 70374-40-2 |
| Molecular Formula | C4HBr2ClO2S2 |
| Molecular Weight | 340.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2,5-Dibromothiophene-3-sulfonyl chloride (C4HBr2ClO2S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 340.44 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
2,5-Dibromothiophene-3-sulfonyl chloride (CAS 70374-40-2) is a high-purity analytical reference standard with the molecular formula C4HBr2ClO2S2 and a molecular weight of 340.44 g/mol.
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.
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 | C4HBr2ClO2S2 |
| Molecular Weight | 340.44 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 2 |
Related Dibromothiophene Standards
- 3,4-Dibromothiophene-2-sulfonyl chloride (CAS 128852-15-3)
- 4,5-Dibromothiophene-2-sulfonyl chloride (CAS 81606-31-7)
- 2,5-Dibromothiophene-3,4-dicarboxylic Acid (CAS 190723-12-7)
- 2,5-Dibromothiophene-3-sulfonamide (CAS 7182-36-7)
- 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)
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