Naproxen Impurity 41 CAS CATO-C4X-170841
| CAS No. | CATO-C4X-170841 |
| Molecular Formula | C14H15NO2 |
| Molecular Weight | 229.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C14H15NO2, Naproxen Impurity 41 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 229.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Naproxen Impurity 41 (CAS CATO-C4X-170841, C14H15NO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
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 | C14H15NO2 |
| Molecular Weight | 229.27 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Naproxen Standards
- Naproxen Impurity 42 (CAS CATO-C4X-170842)
- Naproxen Impurity 7 (CAS CATO-C4X-17087)
- Naproxen Impurity 26 (CAS 23981-80-8)
- Naproxen EP Impurity G (R-Naproxen) (CAS 23979-41-1)
- Naproxen (CAS 22204-53-1)
- Naproxen Dehydro Impurity (CAS 27602-79-5)
- (S)-Naproxen-d3 (CAS 1094102-82-5)
- rac-Naproxen-13C,d3 (CAS 1216704-11-8)
Recommended Standards
- Atorvastatin Impurity 62 (CAS 125971-93-9)
- Atorvastatin Impurity 32 (CAS 186508-94-1)
- Agomelatine Impurity 5 (CAS 152302-45-9)
- Pimavanserin Impurity 1 (CAS 107456-06-4)
- Dopamine Impurity 40 (CAS CATO-C4X-190840)
- Safinamide impurity 49 (CAS 1843368-38-6)
- Topiramate Impurity 41 (CAS CATO-C4X-176841)
- Ethyl 4-fluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (CAS 1198615-85-8)
- Tert-butyl(1r,4r)-5-oxo-2-azabicyclo[2.2.1]heptane-2-carboxylate (CAS 1400808-00-5)
- 1-Bromo-3,5-bis(trifluoromethoxy)benzene (CAS 1010101-95-7)
- TPD1014-2Br (CAS 1640286-62-9)
- 4-((2-Chloro-4-fluorobenzyl)oxy)-3-ethoxy-5-iodobenzoic acid (CAS 1706439-41-9)
- 6-(Methylthio)-2,3-dihydro-1H-inden-1-one (CAS 138485-82-2)
- Semaglutide Impurity 125 xTFA Salt (CAS CATO-C4X-2226125)
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