5-Chloro-2,2,3,3,4,4,5,5-octafluoropentanoyl fluoride CAS 261503-68-8
| CAS No. | 261503-68-8 |
| Molecular Formula | C5ClF9O |
| Molecular Weight | 282.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Chloro-2,2,3,3,4,4,5,5-octafluoropentanoyl fluoride is closely related to a hydroxyl group, an ether linkage, fluorine/chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Chloro-2,2,3,3,4,4,5,5-octafluoropentanoyl fluoride (CAS 261503-68-8) is a high-purity analytical reference standard with the molecular formula C5ClF9O and a molecular weight of 282.49 g/mol.
The molecular framework of 5-Chloro-2,2,3,3,4,4,5,5-octafluoropentanoyl fluoride (C5ClF9O) is characterized by a hydroxyl group, an ether linkage, fluorine/chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, 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.
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 | C5ClF9O |
| Molecular Weight | 282.49 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
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- 5-(Chloromethyl)-3-(fluoromethyl)-4,5-dihydroisoxazole (CAS 1627893-47-3)
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- 4-Pyrimidin-2-ylbenzoyl chloride (CAS 679806-84-9)
- Methyl 3-bromo-2-iodobenzoate (CAS 121772-84-7)
- Tau Peptide (512-525) amide trifluoroacetate salt (CAS 2022956-61-0)
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