Lercanidipine Impurity 16 CAS CATO-C4X-136416
| CAS No. | CATO-C4X-136416 |
| Molecular Formula | C18H20N2O6 |
| Molecular Weight | 360.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Lercanidipine Impurity 16 (C18H20N2O6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Lercanidipine Impurity 16 (CAS CATO-C4X-136416) is a certified pharmaceutical impurity reference standard with the molecular formula C18H20N2O6 and a molecular weight of 360.36 g/mol.
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 | C18H20N2O6 |
| Molecular Weight | 360.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Lercanidipine Standards
- Lercanidipine Impurity N7 (CAS 142592-09-4)
- Lercanidipine Impurity 5 (CAS 88712-56-5)
- Lercanidipine Impurity 1 (CAS 225785-54-6)
- Lercanidipine Impurity 61 (CAS CATO-C4X-136461)
- Lercanidipine Impurity 62 (CAS CATO-C4X-136462)
- Lercanidipine Impurity 63 (CAS CATO-C4X-136463)
- Lercanidipine Impurity 58 (CAS CATO-C4X-136458)
- Lercanidipine Impurity 60 (CAS 100427-51-8)
Recommended Standards
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- Trelagliptin Impurity 64 (CAS CATO-C4X-104664)
- Tadalafil Impurity 181 (CAS CATO-C4X-1087181)
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- Ethyl 6-bromo-3-cyano-2-methoxybenzoate (CAS 1807027-56-0)
- Dutasteride (CAS 164656-23-9)
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Why CATO?
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