4-Diphenylphosphanylbenzoic acid, 2-(trimethylsilyl)ethyl ester solution CAS 566190-45-2
| CAS No. | 566190-45-2 |
| Molecular Formula | C24H27O2PSi |
| Molecular Weight | 406.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Diphenylphosphanylbenzoic acid, 2-(trimethylsilyl)ethyl ester solution (CAS 566190-45-2) is a high-purity analytical reference standard with the molecular formula C24H27O2PSi and a molecular weight of 406.53 g/mol.
Based on its molecular formula C24H27O2PSi, 4-Diphenylphosphanylbenzoic acid, 2-(trimethylsilyl)ethyl ester solution contains a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 406.53 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).
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.
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 | C24H27O2PSi |
| Molecular Weight | 406.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
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