| CAS No. | 2118959-57-0 |
| Molecular Formula | C33H46F3OP |
| Molecular Weight | 546.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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 Dicyclohexyl[3′,4′,5′-trifluoro-3-(1-methylethoxy)-2′,6′-bis(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine (CAS 2118959-57-0), a certified reference material (molecular formula C33H46F3OP, MW 546.69 g/mol) for analytical method development and quality control.
The molecular framework of Dicyclohexyl[3′,4′,5′-trifluoro-3-(1-methylethoxy)-2′,6′-bis(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine (C33H46F3OP) is characterized by organophosphorus functionality, a hydroxyl group, an ether linkage, fluorine substitution, a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
| Molecular Formula | C33H46F3OP |
| Molecular Weight | 546.69 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 9.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | F-containing |