40538-11-2 A825158 diphenyl(2-phenylethenyl)phosphane diphenyl(2-phenylethenyl)phosphine CAS 40538-11-2
| CAS No. | 40538-11-2 |
| Molecular Formula | C20H35P |
| Molecular Weight | 306.47 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.
CATO supplies 40538-11-2 A825158 diphenyl(2-phenylethenyl)phosphane diphenyl(2-phenylethenyl)phosphine (CAS 40538-11-2), a certified reference material (molecular formula C20H35P, MW 306.47 g/mol) for analytical method development and quality control.
Structurally, 40538-11-2 A825158 diphenyl(2-phenylethenyl)phosphane diphenyl(2-phenylethenyl)phosphine (C20H35P) contains organophosphorus functionality. The molecule exhibits a degree of unsaturation (DBE) of 3.5, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 306.47 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C20H35P |
| Molecular Weight | 306.47 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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1968 |
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