78-50-2 Trioctyl phosphine oxide Phosphine oxide, trioctyl- Trioctylphosphine oxide Cyanex 921 EINECS 201-121-3 Hostarex PX 324 TOPO Tri-n-octylphosphine oxide EC 201-121-3 CAS 78-50-2
| CAS No. | 78-50-2 |
| Molecular Formula | C24H51OP |
| Molecular Weight | 386.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 78-50-2 Trioctyl phosphine oxide Phosphine oxide, trioctyl- Trioctylphosphine oxide Cyanex 921 EINECS 201-121-3 Hostarex PX 324 TOPO Tri-n-octylphosphine oxide EC 201-121-3 (CAS 78-50-2), a certified reference material (molecular formula C24H51OP, MW 386.63 g/mol) for analytical method development and quality control.
78-50-2 Trioctyl phosphine oxide Phosphine oxide, trioctyl- Trioctylphosphine oxide Cyanex 921 EINECS 201-121-3 Hostarex PX 324 TOPO Tri-n-octylphosphine oxide EC 201-121-3 (C24H51OP) contains organophosphorus functionality, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
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 | C24H51OP |
| Molecular Weight | 386.63 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | -0.5 |
| CAS Registry Year (est.) | 1957 |
Related Trioctyl Standards
- Trioctyl borate (CAS 2467-12-1)
- trioctyl aluminum solution (CAS 1070-00-4)
- Trioctyl Phosphite (mixture) (CAS 3028-88-4)
- 2,4,6-Trioctyl-1,3,5,2,4,6-trioxatriborinane (CAS 142169-80-0)
- 1,3,5-Trioctyl-1,3,5-triazinane (CAS 94279-01-3)
- 1,2,4-Trioctyl Ester 1,2,4-Benzenetricarboxylic Acid (CAS 89-04-3)
- Trioctyl Trimellitate (CAS 3319-31-1)
- Trioctyl(phenyl)phosphoniumbromide (CAS 90144-91-5)
Recommended Standards
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- tert-Butyl 6-(aminomethyl)-1H-pyrrolo[2,3-b]pyridine-1-carboxylate (CAS 1427501-59-4)
- 8-Methyl-8-azabicyclo[3.2.1]oct-3-yl-2-phenylbutanoate hydrochloride (CAS 1233641-91-2)
- 4-(2-Thienyl)-1,2,3,6-tetrahydropyridine (CAS 50461-50-2)
- 3-(2-Chloro-6-fluorophenyl)-6-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridine (CAS 311799-07-2)
- Semaglutide impurity 249 (CAS CATO-C4X-2226249)
Why CATO?
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