Epinastine Impurity 13 HCl CAS 141342-69-0
| CAS No. | 141342-69-0 |
| Molecular Formula | C16H13N3O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Epinastine Impurity 13 HCl (CAS 141342-69-0), a pharmacopoeial impurity reference standard (molecular formula C16H13N3OHCl, MW 299.76 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C16H13N3OHCl, Epinastine Impurity 13 HCl contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 299.76 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C16H13N3O HCl |
| Molecular Weight | 299.76 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Epinastine Standards
- Epinastine Impurity 24 (CAS 1110929-19-5)
- Epinastine Impurity 53 (CAS 114-39-6)
- Epinastine Related Compound A HCl (CAS 1159604-26-8)
- Epinastine Impurity 6 (CAS 1211-06-9)
- Epinastine Impurity 3 (CAS 1216548-20-7)
- Epinastine EP Impurity B (CAS 1217052-16-8)
- Epinastine Impurity 22 (CAS 124847-00-3)
- Epinastine Impurity 44 Fumarate (CAS 127785-96-0)
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- 5-Cyclopropoxy-N1,N1-dimethylbenzene-1,2-diamine (CAS 1243399-43-0)
- Ethyl 4-bromo-3-nitrobenzoate (CAS 168473-87-8)
- Tirzepatide Impurity 20 (CAS CATO-C4X-324020)
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