(2R,4R)-Pentane-2,4-diylbis(di-p-tolylphosphine) CAS 217648-59-4
| CAS No. | 217648-59-4 |
| Molecular Formula | C33H38P2 |
| Molecular Weight | 496.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
(2R,4R)-Pentane-2,4-diylbis(di-p-tolylphosphine) (CAS 217648-59-4) is a high-purity analytical reference standard with the molecular formula C33H38P2 and a molecular weight of 496.60 g/mol.
Based on its molecular formula C33H38P2, (2R,4R)-Pentane-2,4-diylbis(di-p-tolylphosphine) contains organophosphorus functionality, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 496.60 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.
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 | C33H38P2 |
| Molecular Weight | 496.60 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 |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2019 |
Recommended Standards
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