1-(2,5-Dimethoxyphenyl)-2-(triphenylphosphoranylidene)ethanone CAS 141957-50-8
| CAS No. | 141957-50-8 |
| Molecular Formula | C28H25O3P |
| Molecular Weight | 440.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-(2,5-Dimethoxyphenyl)-2-(triphenylphosphoranylidene)ethanone is closely related to a steroid core, a phosphonate group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 1-(2,5-Dimethoxyphenyl)-2-(triphenylphosphoranylidene)ethanone (CAS 141957-50-8), a certified reference material (molecular formula C28H25O3P, MW 440.47 g/mol) for analytical method development and quality control.
Based on its molecular formula C28H25O3P, 1-(2,5-Dimethoxyphenyl)-2-(triphenylphosphoranylidene)ethanone contains a steroid core, a phosphonate group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 440.47 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C28H25O3P |
| Molecular Weight | 440.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| 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) | 16.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
Related Dimethoxyphenyl Standards
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Recommended Standards
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