Ketoprofen Impurity 99 CAS CATO-C4X-147199
| CAS No. | CATO-C4X-147199 |
| Molecular Formula | C20H18O8 |
| Molecular Weight | 386.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| 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.
As a process- or degradation-related impurity, Ketoprofen Impurity 99 (CAS CATO-C4X-147199, C20H18O8) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Ketoprofen Impurity 99 (C20H18O8) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C20H18O8 |
| Molecular Weight | 386.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Ketoprofen Standards
- Ketoprofen Impurity 29 (CAS CATO-C4X-147129)
- Ketoprofen Impurity 71 (CAS 1853132-06-5)
- Ketoprofen Impurity 77 (CAS 2098704-07-3)
- Ketoprofen Impurity 68 (CAS CATO-C4X-147168)
- Ketoprofen 1,4-Sorbitol Ester (CAS CATO-C4X-147118)
- Ketoprofen 2-Ethylhexyl Ester (CAS CATO-C4X-147169)
- Ketoprofen Impurity 116 (CAS 1777830-06-4)
- Ketoprofen Impurity 26 (CAS 1777829-91-0)
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