tert-Butyl(3-chloro-4-fluorophenoxy)dimethylsilane CAS 1881293-23-7
| CAS No. | 1881293-23-7 |
| Molecular Formula | C12H18ClFOSi |
| Molecular Weight | 260.81 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.
tert-Butyl(3-chloro-4-fluorophenoxy)dimethylsilane (CAS 1881293-23-7), molecular formula C12H18ClFOSi and molecular weight 260.81 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H18ClFOSi, tert-Butyl(3-chloro-4-fluorophenoxy)dimethylsilane contains a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 260.81 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 | C12H18ClFOSi |
| Molecular Weight | 260.81 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | F/Cl-containing |
Recommended Standards
- (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl 4-chlorobutanoate (CAS 668486-64-4)
- tert-Butyl(5-chloro-2-fluorophenoxy)dimethylsilane (CAS 1881296-20-3)
- 1-Chloro-6,6-dimethyl-3-(methylthio)-6,7-dihydrobenzo[c]thiophen-4(5H)-one (CAS 175202-90-1)
- tert-Butyl(2-chloro-3-fluorophenoxy)dimethylsilane (CAS 1881296-32-7)
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