3-(Diphenylphosphoryl)cyclohexanone CAS 89358-47-4
| CAS No. | 89358-47-4 |
| Molecular Formula | C18H19O2P |
| Molecular Weight | 298.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-(Diphenylphosphoryl)cyclohexanone (CAS 89358-47-4), molecular formula C18H19O2P and molecular weight 298.32 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-(Diphenylphosphoryl)cyclohexanone (C18H19O2P) contains a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.5, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 298.32 g/mol, it falls into the medium-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C18H19O2P |
| Molecular Weight | 298.32 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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.) | 1982 |
Related Diphenylphosphoryl Standards
- 2-(Diphenylphosphoryl)cyclohexanone (CAS 53695-49-1)
- 2-(Diphenylphosphoryl)-3,3-dimethylbutanenitrile (CAS 62970-03-0)
- 4-(Diphenylphosphoryl)-2-hydroxy-1,2-diphenylbutan-1-one (CAS 22950-47-6)
- (diphenylphosphoryl)methanesulfonamide (CAS 2455521-73-8)
- (S)-2-((Diphenylphosphoryl)(methyl)amino)propanoic acid (CAS 62316-80-7)
- 4-(diphenylphosphoryl)benzonitrile (CAS 5032-54-2)
- (S)-2-((Diphenylphosphoryl)amino)propanoic acid (CAS 62056-87-5)
- Ethyl 2-(diphenylphosphoryl)acetate (CAS 6361-05-3)
Recommended Standards
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