Diethyl (2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl)phosphonate CAS 70446-76-3
| CAS No. | 70446-76-3 |
| Molecular Formula | C11H10F7O3P |
| Molecular Weight | 354.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Diethyl (2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl)phosphonate (C11H10F7O3P) is characterized by a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution. 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.
Diethyl (2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl)phosphonate (CAS 70446-76-3) is a high-purity analytical reference standard with the molecular formula C11H10F7O3P and a molecular weight of 354.16 g/mol.
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 | C11H10F7O3P |
| Molecular Weight | 354.16 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | F-containing |
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- 2-(4-Chloro-2-methoxyphenyl)benzoic acid (CAS 1261896-06-3)
- 1-[Bis(trifluoromethanesulfonyl)methyl]-2,3,4,5,6-pentafluorobenzene (CAS 405074-81-9)
- (R)-methyl 1-(methoxyamino)-1-oxo-3-phenylpropan-2-ylcarbamate (CAS 166742-96-7)
- Troxerutin Impurity 4 (CAS 23869-24-1)
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- Benzyl 3-(benzylamino)piperidine-1-carboxylate hydrochloride (CAS 1179362-03-8)
- Fibrinopeptide A, human TFA (CAS 61533-47-9)
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