Triphenylsulfonium bromide CAS 3353-89-7
| CAS No. | 3353-89-7 |
| Molecular Formula | C18H15S |
| Molecular Weight | N/A |
| 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.
Triphenylsulfonium bromide (CAS 3353-89-7), molecular formula C18H15SBr and molecular weight 343.28 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H15SBr, Triphenylsulfonium bromide contains sulfur-containing functionality, bromine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 343.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C18H15S Br |
| Molecular Weight | 343.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Triphenylsulfonium Standards
- Triphenylsulfonium (CAS 18393-55-0)
- Triphenylsulfonium (7,7-dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonate (CAS 227199-92-0)
- Triphenylsulfonium chloride (CAS 4270-70-6)
- Triphenylsulfonium tetrafluoroborate (CAS 437-13-8)
- Triphenylsulfonium 2,3,5,6-tetrafluoro-4-(methacryloyloxy)benzenesulfonate (CAS 915090-37-8)
- Triphenylsulfonium 1,1,2-trifluoro-4-(methacryloyloxy)butane-1-sulfonate (CAS 960012-02-6)
Recommended Standards
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- 2-(tert-Butyl)cyclohexyl ethyl carbonate (CAS 67801-64-3)
- Methyl 2-(1H-indole-3-carbonyl)thiazole-4-carboxylate (CAS 448906-42-1)
- 6-Fluoro-5-methyl-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-4-ol (CAS 2368910-52-3)
- 2-{1-[4-(Trifluoromethyl)phenyl]cyclobutyl}acetic acid (CAS 1358805-32-9)
- 2-Methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine dihydrochloride (CAS 1609395-89-2)
- N-(5-cyano-2-(p-tolylthio)phenyl)-3-(trifluoromethyl)benzamide (CAS 303147-03-7)
- 2-(2-(Phenylthio)ethoxy)ethan-1-amine (CAS 752964-48-0)
- 4,5-Dibromo-2-fluorobenzoyl chloride (CAS 1803837-33-3)
- Semaglutide Impurity 167 (CAS CATO-C4X-2226167)
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