1,4-Bis(trimethylsilyl)-2,3,5,6-tetrafluorobenzene CAS 16956-91-5
| CAS No. | 16956-91-5 |
| Molecular Formula | C12H24F4Si2 |
| Molecular Weight | 300.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 1,4-Bis(trimethylsilyl)-2,3,5,6-tetrafluorobenzene (C12H24F4Si2) is characterized by fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
1,4-Bis(trimethylsilyl)-2,3,5,6-tetrafluorobenzene (CAS 16956-91-5), molecular formula C12H24F4Si2 and molecular weight 300.48 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C12H24F4Si2 |
| Molecular Weight | 300.48 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | -1.0 |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | F-containing |
Related Bis Standards
- 3-(Trimethylsilyl)pyridin-2-yl trifluoromethanesulfonate (CAS 134391-76-7)
- 3-[Bis(trimethylsilyl)amino]phenylmagnesium chloride solution (CAS 174484-84-5)
- Tris(trimethylsilyl) Phosphite (CAS 1795-31-9)
- N-(2-(Trimethylsilyl)furo[3,2-b]pyridin-7-yl)pivalamide (CAS 1142192-62-8)
- 4-[2-(Trimethylsilyl)ethynyl]pyrene (CAS 600168-40-9)
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- N-(Trimethylsilyl)-N-(2-((trimethylsilyl)oxy)pyrimidin-4-yl)acetamide (CAS 18027-23-1)
- 9-(Trimethylsilyl)-6-((trimethylsilyl)thio)-9H-purine (CAS 132151-80-5)
Recommended Standards
- 4-Chloro-5-iodo-2,6-dimethoxypyrimidine (CAS 134221-53-7)
- rac-3-Hydroxyoctadecanoic Acid (CAS 17773-30-7)
- 11-Hydroxyoctadecanoic acid (CAS 13419-91-5)
- 13-Hydroxyoctadecanoic acid (CAS 17773-34-1)
- N-(4-(Dimethylamino)-2-ethoxypyrimidin-5-yl)furan-2-carboxamide (CAS 1798675-63-4)
- Tetrasodium Iminodisuccinate (CAS 144538-83-0)
- 5-chloro-3,3-dimethyl-1H,2H,3H-pyrrolo[2,3-c]pyridin-2-one (CAS 2041751-90-8)
- 1-(1,3-Diisopropyl-5-vinyl-1H-pyrazol-4-yl)-2-methylpropan-1-one (CAS 1956328-31-6)
- (E)-(Butan-2-yl 2,4-dichloro-N-(pyridin-3-yl)benzene-1-carboximidate) (CAS 75897-09-5)
- 4-[(tert-Butoxycarbonyl)amino]-2-(trifluoromethyl)benzoic acid (CAS 1326229-55-3)
- Neodymium(III) carbonate octahydrate (CAS 7184-63-6)
- (8-bromo-3-chloro-5-isoquinolyl) trifluoromethanesulfonate (CAS 2660255-83-2)
- 2-(((Benzyloxy)carbonyl)amino)-5-nitrobenzoic acid (CAS 778601-39-1)
- [Glu]17-Liraglutide (CAS CATO-C4X-199236)
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