4-bromo-2-chloro-thiophene CAS 32431-93-9
| CAS No. | 32431-93-9 |
| Molecular Formula | C4H6BrClS |
| Molecular Weight | 201.51 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.
4-bromo-2-chloro-thiophene (CAS 32431-93-9), molecular formula C4H6BrClS and molecular weight 201.51 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-bromo-2-chloro-thiophene (C4H6BrClS) is characterized by sulfur-containing functionality, chlorine/bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C4H6BrClS |
| Molecular Weight | 201.51 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 1 |
Related bromo Standards
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- Ethyl 2-Bromo-2-chloroacetate (CAS 22524-32-9)
- 5-Bromo-2-chloro-4-(chloromethyl)pyridine (CAS 121586-44-5)
- (2-Bromo-4-pyridinyl)-boronic Acid (CAS 458532-94-0)
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- 4-Bromo-3,5-dichloroiodobenzene (CAS 189281-92-3)
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Recommended Standards
- 2,3-Dichloro-5-(chloromethyl)thiophene (CAS 122065-05-8)
- 5-Chloropyridine-3,4-dicarboxylic acid (CAS 101420-62-6)
- 2,5-dichloro-3-(chloromethyl)thiophene (CAS 10095-91-7)
- 3-Chloropyridine-2,5-dicarboxylic acid (CAS 106014-20-4)
- Ethyl 2-(4-hydroxypiperidin-4-yl)-2-methylpropanoate (CAS 1248465-22-6)
- 4-Methyl-1-(p-tolyl)-1h-pyrazol-5-amine (CAS 1448854-76-9)
- (S)-9a-(2-fluorophenyl)-8-phenyl-9,9a-dihydropyrido[1,2-a]indole-6,10-dione (CAS 2368852-25-7)
- 6-Bromo-4-(pyrrolidin-1-yl)quinazoline (CAS 307538-51-8)
- 3-(2-Bromo-5-(trifluoromethyl)phenyl)pyridine (CAS 1443377-31-8)
- (6-chloro-2-methoxy-3-pyridyl)boronic acid (CAS 1072946-50-9)
- 5-Ethoxy-2-fluoropyridine (CAS 1443679-87-5)
- N-Methyl-1-(3-(trifluoromethyl)pyridin-2-yl)methanamine dihydrochloride (CAS 2680615-63-6)
- 4,4'-Diiodo-2,2'-dimethyl-1,1'-biphenyl (CAS 69571-02-4)
- Glucagon Monohydrochloride (CAS 28270-04-4)
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