Epinastine Impurity 27 CAS CATO-C4X-184027
| CAS No. | CATO-C4X-184027 |
| Molecular Formula | C18H19NO |
| Molecular Weight | 265.35 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, Epinastine Impurity 27 (CAS CATO-C4X-184027, C18H19NO) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C18H19NO, Epinastine Impurity 27 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 265.35 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).
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 | C18H19NO |
| Molecular Weight | 265.35 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Epinastine Standards
- Epinastine Impurity 45 (CAS CATO-C4X-184045)
- Epinastine Impurity 41 (CAS CATO-C4X-184041)
- Epinastine Impurity 12 (CAS 745761-19-7)
- Epinastine Impurity 9 (CAS 141342-71-4)
- Epinastine Impurity N7 (CAS 21535-43-3)
- Epinastine Impurity 17 (CAS 23207-75-2)
- Epinastine Impurity 24 (CAS 1110929-19-5)
- Epinastine Impurity 20 (CAS CATO-C4X-184020)
Recommended Standards
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- Ambroxol impurity 110 (CAS CATO-C4X-1085110)
- Arotinolol Impurity 18 (CAS 114774-09-3)
- Dolutegravir Impurity N13 (CAS 1246616-73-8)
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