2-Bromo-5-(trimethylsilyl)-thiophene CAS 18246-28-1
| CAS No. | 18246-28-1 |
| Molecular Formula | C7H11BrSSi |
| Molecular Weight | 235.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Bromo-5-(trimethylsilyl)-thiophene (CAS 18246-28-1), molecular formula C7H11BrSSi and molecular weight 235.22 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-Bromo-5-(trimethylsilyl)-thiophene (C7H11BrSSi) contains sulfur-containing functionality, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 235.22 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H11BrSSi |
| Molecular Weight | 235.22 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) | 2.0 |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
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Recommended Standards
- DEPMPO (CAS 157230-67-6)
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- 1-(3-Fluorobenzyl)-N-hydroxy-1H-1,2,3-triazole-4-carboximidamide (CAS 1255791-10-6)
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- 4-Methoxy-6-methyl-2,2'-bipyridine (CAS 102116-96-1)
- (1-Ethyl-5-hydroxy-1H-pyrazol-4-yl)-(4-methanesulfonyl-2-oxazol-2-yl-phenyl)-methanone (CAS 1231563-85-1)
- 6,7-Dihydropyrazolo[1,5-a]pyrimidine-4(5H)-carbaldehyde (CAS 126352-82-7)
- 2-(4-Bromo-3,5-difluorophenyl)acetonitrile (CAS 1694843-68-9)
- 5-(4-Fluorophenoxy)valeroyl chloride (CAS 1987007-77-1)
- 4-{[4-(propan-2-yl)phenyl]methyl}piperidine (CAS 757173-05-0)
- 2-(Trifluoromethyl)piperidine-3-carboxylic acid (CAS 1240528-93-1)
- Des-Leu26-Tirzepatide (CAS CATO-CPTD788947)
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