Rupatadine Impurity 16 CAS CATO-C4X-102716
| CAS No. | CATO-C4X-102716 |
| Molecular Formula | C26H26ClN3O |
| Molecular Weight | 431.96 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Rupatadine Impurity 16 (CAS CATO-C4X-102716), a pharmacopoeial impurity reference standard (molecular formula C26H26ClN3O, MW 431.96 g/mol) used for the identification and quantification of trace impurities in APIs.
Rupatadine Impurity 16 (C26H26ClN3O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C26H26ClN3O |
| Molecular Weight | 431.96 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Rupatadine Standards
- Rupatadine impurity 17 (CAS CATO-C4X-102717)
- Rupatadine impurity 7 (CAS 1704730-21-1)
- Rupatadine impurity 8 (CAS CATO-C4X-10278)
- Rupatadine Impurity 42 (CAS CATO-C4X-102742)
- Rupatadine Impurity 38 (CAS CATO-C4X-102738)
- Rupatadine impurity 6 (CAS 156523-04-5)
- Rupatadine Impurity 43 (CAS CATO-C4X-102743)
- Rupatadine impurity 12 (CAS CATO-C4X-102712)
Recommended Standards
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