Ketoprofen Impurity 41 CAS 68432-92-8
| CAS No. | 68432-92-8 |
| Molecular Formula | C10H9NO2 |
| Molecular Weight | 175.18 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Ketoprofen Impurity 41 (CAS 68432-92-8, C10H9NO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Ketoprofen Impurity 41 (C10H9NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 175.18 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Ketoprofen Impurity 41 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C10H9NO2 |
| Molecular Weight | 175.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 1 |
Related Ketoprofen Standards
- Ketoprofen Impurity 40 (CAS 28310-25-0)
- Ketoprofen Impurity 37 (CAS 18908-59-3)
- Ketoprofen Impurity 42 (CAS 76469-88-0)
- Ketoprofen EP Impurity G (CAS 5537-71-3)
- Ketoprofen Impurity 72 (CAS CATO-C4X-147172)
- Ketoprofen Impurity 62 (CAS 333991-43-8)
- Ketoprofen Impurity 112 (CAS 42872-32-2)
- Ketoprofen Impurity 46 (CAS 713-36-0)
Recommended Standards
- Metronidazole-d4 (CAS 1261392-47-5)
- Furosemide Impurity 57 (CAS 19377-82-3)
- Furosemide Impurity 49 (CAS CATO-C4X-140249)
- Pemetrexed Impurity 26 (CAS 52454-78-1)
- Amlodipine impurity 127 (CAS CATO-C4X-1095127)
- Nifuratel Impurity 19 (CAS CATO-C4X-127219)
- Omeprazole Impurity 22 (CAS 109371-18-8)
- 1-(3,5-Difluorophenyl)propan-2-ol (CAS 1021928-08-4)
- 5-Imino-1,3-dimethyl-1H-pyrrol-2(5H)-one (CAS 91305-87-2)
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- Ethyl 2-((3-cyano-4,6-dimethylpyridin-2-yl)thio)acetate (CAS 128257-06-7)
- 4-(4-Ethylcyclohexyl)phenol (CAS 150763-12-5)
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