Ketoprofen Impurity 97 CAS CATO-C4X-147197
| CAS No. | CATO-C4X-147197 |
| Molecular Formula | C29H31NO4 |
| Molecular Weight | 457.56 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C29H31NO4, Ketoprofen Impurity 97 contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 457.56 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Ketoprofen Impurity 97 (CAS CATO-C4X-147197) is a certified pharmaceutical impurity reference standard with the molecular formula C29H31NO4 and a molecular weight of 457.56 g/mol.
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.
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 | C29H31NO4 |
| Molecular Weight | 457.56 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Ketoprofen Standards
- Ketoprofen Impurity 89 (CAS CATO-C4X-147189)
- Ketoprofen Impurity 90 (CAS CATO-C4X-147190)
- Ketoprofen Impurity 95 (CAS CATO-C4X-147195)
- Ketoprofen Impurity 92 (CAS CATO-C4X-147192)
- Ketoprofen Impurity 83 (CAS CATO-C4X-147183)
- Ketoprofen Impurity 84 (CAS CATO-C4X-147184)
- (R)-Ketoprofen β-D-glucuronide (CAS 140148-25-0)
- (S)-Ketoprofen β-D-glucuronide (CAS 140148-26-1)
Recommended Standards
- Bambuterol Impurity 6 (CAS CATO-C4X-27466)
- Trifarotene Impurity 3 (CAS CATO-C4X-31323)
- Trifarotene Impurity 6 (CAS CATO-C4X-31326)
- NH-bis-PEG5 (CAS 63721-06-2)
- Benserazide Impurity 58 (CAS CATO-C4X-142758)
- Canagliflozin Impurity 75 (CAS CATO-C4X-112375)
- Halometasone Impurity N3 (CAS 23961-22-0)
- Clevidipine-d5 (CAS 1346602-00-3)
- 3-(Furan-2-yl)-N-(furan-2-ylmethyl)-3-phenylpropan-1-amine (CAS 396104-71-5)
- N-(3-cyano-4-(p-tolylthio)phenyl)-3-methylbenzamide (CAS 306980-79-0)
- 2-(3-((1H-Indol-3-yl)methyl)-4-(tert-butoxycarbonyl)piperazin-1-yl)acetic acid (CAS 1060813-83-3)
- Lotilaner Impurity 11 (CAS CATO-C4X-325611)
- Risperidone RC 20 (CAS 84163-07-5)
- Peptide 432 (CAS CATO-CPTD788432)
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