Felodipine Impurity 4 CAS 65193-87-5
| CAS No. | 65193-87-5 |
| Molecular Formula | C7H9NO3 |
| Molecular Weight | 155.15 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Felodipine Impurity 4 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
As a process- or degradation-related impurity, Felodipine Impurity 4 (CAS 65193-87-5, C7H9NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Felodipine Impurity 4 (C7H9NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 155.15 g/mol, it falls into the medium-molecular-weight range. 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).
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 | C7H9NO3 |
| Molecular Weight | 155.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 1 |
Related Felodipine Standards
- Felodipine Impurity 15 (CAS 21962-45-8)
- Felodipine Impurity N5 (CAS 7318-00-5)
- Felodipine Impurity 14 (CAS 95306-64-2)
- Felodipine Impurity 16 (CAS 52334-51-7)
- Felodipine Impurity 10 (CAS 3290-01-5)
- Felodipine Impurity 37 (CAS CATO-C4X-109437)
- Felodipine Impurity 1 (CAS 68064-69-7)
- Felodipine Impurity 12 (CAS 74073-22-6)
Recommended Standards
- Istradefylline Impurity 29 (CAS 5759-63-7)
- Clavulanate Potassium EP Impurity D (CAS 404839-11-8)
- Istradefylline Impurity 14 (CAS 21237-00-3)
- Potassium Clavulanate Impurity 21 (CAS CATO-C4X-114621)
- Imrecoxib Impurity 27 (CAS CATO-C4X-237927)
- Linezolid Impurity 14 (PNU142586) (CAS 368891-70-7)
- Upadacitinib Impurity 141 (CAS CATO-C4X-2405141)
- 4-(Cyclopent-3-en-1-yl)-N,N-dimethylbutanamide (CAS 2306269-85-0)
- 1-(3-Bromo-2-nitrophenyl)ethanone (CAS 56759-31-0)
- Resmetirom impurity 125 (CAS CATO-C4X-2912125)
- 5-Bromo-4-methyl-1H-1,2,3-triazole hydrobromide (CAS 1956335-37-7)
- 1-(Azetidin-3-yl)-6-(furan-3-yl)imidazo[1,5-a]pyridine (CAS 1422065-74-4)
- (4-(Dimethylamino)phenyl)(piperazin-1-yl)methanone (CAS 610802-19-2)
- Insulin Degludec Impurity 25 (CAS CATO-C4X-215725)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com