Ketoprofen Impurity 24 CAS 872091-85-5
| CAS No. | 872091-85-5 |
| Molecular Formula | C12H13NO2 |
| Molecular Weight | 203.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ketoprofen Impurity 24 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.
CATO supplies Ketoprofen Impurity 24 (CAS 872091-85-5), a pharmacopoeial impurity reference standard (molecular formula C12H13NO2, MW 203.24 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Ketoprofen Impurity 24 (C12H13NO2) 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 203.24 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C12H13NO2 |
| Molecular Weight | 203.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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.) | 1987 |
| Nitrogen Atoms | 1 |
Related Ketoprofen Standards
- Ketoprofen Impurity 38 (CAS 24131-07-5)
- Ketoprofen Impurity 23 (CAS 1092395-13-5)
- Ketoprofen Impurity 25 (CAS 63444-57-5)
- Ketoprofen Impurity 15 (CAS 66067-43-4)
- Ketoprofen Impurity 48 (CAS 781-35-1)
- Ketoprofen Impurity 47 (CAS 620-86-0)
- Ketoprofen Impurity 58 (CAS CATO-C4X-147158)
- Ketoprofen EP Impurity C (CAS 68432-95-1)
Recommended Standards
- Raltitrexed Impurity 8 (CAS 1235852-48-8)
- Rebamipide Impurity 61 (CAS CATO-C4X-152361)
- Pregabalin impurity 104 (CAS 871577-78-5)
- Dexpanthenol impurity 33 (CAS 7582-11-8)
- Linezolid Impurity 43 (CAS 1798014-14-8)
- Drotaverin Impurity 48 (CAS 1536475-50-9)
- Topiroxostat Impurity 36 (CAS CATO-C4X-105536)
- 4-((1E,3E)-4-(4-(Dimethylamino)phenyl)buta-1,3-dien-1-yl)-1-ethylquinolin-1-ium perchlorate (CAS 92479-59-9)
- 2-(Difluoromethyl)-6-phenylpyridin-3-amine (CAS 1713477-38-3)
- ((1,4-Phenylenebis(dimethylsilanediyl))bis(2,1-phenylene))dimethanol (CAS 1266252-11-2)
- (E)-N,N-Dimethyl-2-(pyrimidin-4-yl)ethenamine (CAS 179009-23-5)
- 2-Chloro-N-ethyl-N-(4-(methylthio)benzyl)acetamide (CAS 1353983-04-6)
- 5-chloro-3-cyclopropyl-1H-pyrazole (CAS 1416437-25-6)
- Peptide 436 (CAS CATO-CPTD788436)
Why CATO?
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