Bis(diphenylphosphinomethyl)phenylphosphine oxide CAS 21851-89-8
| CAS No. | 21851-89-8 |
| Molecular Formula | C32H29OP3 |
| Molecular Weight | 522.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Bis(diphenylphosphinomethyl)phenylphosphine oxide is closely related to organophosphorus functionality, a hydroxyl group, an ether linkage, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Bis(diphenylphosphinomethyl)phenylphosphine oxide (CAS 21851-89-8) is a high-purity analytical reference standard with the molecular formula C32H29OP3 and a molecular weight of 522.49 g/mol.
The molecular framework of Bis(diphenylphosphinomethyl)phenylphosphine oxide (C32H29OP3) is characterized by organophosphorus functionality, a hydroxyl group, an ether linkage, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C32H29OP3 |
| Molecular Weight | 522.49 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, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 18.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
Related Bis Standards
Recommended Standards
- Carvedilol Phosphate (CAS 610309-89-2)
- N-((3R,4R,5S)-4-Hydroxy-5-(10H-phenoxazin-10-yl)tetrahydro-2H-pyran-3-yl)-4-(trifluoromethoxy)benzenesulfonamide (CAS 2088956-23-2)
- Dichlorobis[3-(di-i-propylphosphino)propylamine]ruthenium(II) (CAS 1196147-57-5)
- Elobixibat Impurity 37 (CAS CATO-C4X-283837)
- (S)-Thalidomide (CAS 841-67-8)
- Methyl 2,5-dihydrothiophene-3-carboxylate 1,1-dioxide (CAS 67488-50-0)
- 2-Methylbut-3-ynenitrile (CAS 124974-82-9)
- 1-(6-Phenylindolizin-3-yl)-1H-pyrazole-5-carboxylic acid (CAS 1422066-38-3)
- 2-Amino-4-(difluoromethyl)-5-methylpyridin-3-ol (CAS 1805333-55-4)
- [(5,6,7,8-tetrahydronaphthalen-2-ylsulfonyl)amino]acetic acid (CAS 790681-76-4)
- n-Octylammonium Iodide (CAS 60734-63-6)
- 4-Chloro-3-(5-formylfuran-2-yl)benzoic acid (CAS 425630-53-1)
- 1-O-(cis-9-Octadecenyl)-2-O-acetyl-sn-glycero-3-phosphocholine (CAS 85966-90-1)
- Semaglutide impurity 248 (CAS CATO-C4X-2226248)
Why CATO?
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