Ketoprofen Impurity 38 CAS 64379-72-2
| CAS No. | 64379-72-2 |
| Molecular Formula | C11H11NO2 |
| Molecular Weight | 189.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Ketoprofen Impurity 38 (CAS 64379-72-2) is a certified pharmaceutical impurity reference standard with the molecular formula C11H11NO2 and a molecular weight of 189.21 g/mol.
Ketoprofen Impurity 38 (C11H11NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 certified reference material (CRM), Ketoprofen Impurity 38 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 | C11H11NO2 |
| Molecular Weight | 189.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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.) | 1975 |
| Nitrogen Atoms | 1 |
Related Ketoprofen Standards
- Ketoprofen Impurity 36 (CAS 872091-00-4)
- Ketoprofen Impurity 44 (CAS 131019-17-5)
- Ketoprofen Impurity 63 (CAS 146257-39-8)
- Ketoprofen Impurity 45 (CAS 1272414-15-9)
- Ketoprofen Impurity 22 (CAS 42872-29-7)
- Ketoprofen Impurity 43 (CAS 34040-63-6)
- Ketoprofen EP Impurity C (CAS 68432-95-1)
- Ketoprofen Impurity 46 (CAS 713-36-0)
Recommended Standards
- Pregabalin Impurity 25 (CAS CATO-C4X-131225)
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- Thioctic acid Impurity 75 (CAS CATO-C4X-152675)
- Salbutamol Impurity 120 (CAS CATO-C4X-1176120)
- Etrasimod Impurity 41 (CAS 2863532-92-5)
- Mianserin Impurity 113 (CAS CATO-C4X-1369113)
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- 2-Methyl-N-(3-morpholinopropyl)butan-1-amine (CAS 1038235-18-5)
- Diethyl (4-(methylthio)phenyl)phosphonate (CAS 77918-45-7)
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