Nitrendipine Impurity 7 CAS 89267-42-5
| CAS No. | 89267-42-5 |
| Molecular Formula | C17H16N2O6 |
| Molecular Weight | 344.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Nitrendipine Impurity 7.
Nitrendipine Impurity 7 (CAS 89267-42-5) is a certified pharmaceutical impurity reference standard with the molecular formula C17H16N2O6 and a molecular weight of 344.32 g/mol.
Nitrendipine Impurity 7 (C17H16N2O6) 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).
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 certified reference material (CRM), Nitrendipine Impurity 7 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.
Physical & Chemical Properties
| Molecular Formula | C17H16N2O6 |
| Molecular Weight | 344.32 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 2 |
Related Nitrendipine Standards
- Nitrendipine impurity 21 (CAS 1195583-65-3)
- Nitrendipine Impurity 3 (CAS 76258-20-3)
- Nitrendipine Impurity 4 (CAS CATO-C4X-18344)
- Nitrendipine Impurity 5 (CAS 74936-73-5)
- Nitrendipine EP Impurity A (CAS 89267-41-4)
- Nitrendipine Impurity 2 (CAS CATO-C4X-18342)
- (+)-Nitrendipine (CAS 80890-07-9)
- Nitrendipine (CAS 39562-70-4)
Recommended Standards
- Bifendate Impurity 4 (CAS CATO-C4X-25554)
- Usnic acid (CAS 125-46-2)
- Nintedanib Impurity 99 (CAS CATO-C4X-181499)
- Tetraisopropyl methylenediphosphonate (CAS 1660-95-3)
- Benazepril EP Impurity C (CAS 86541-78-8)
- Papaverine impurity 19 HCl (CAS CATO-C4X-206719)
- Coclaurine Impurity 7 (CAS CATO-C4X-27517)
- 2-Hydroxy-3-(methoxycarbonyl)benzoic acid (CAS 101670-85-3)
- 3-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoxazole (CAS 1346808-44-3)
- Di-tert-butyl (3-bromo-6-chloropyrazin-2-yl)iminodicarbonate (CAS 1801693-41-3)
- 3,3,3-Trifluoro-1-(p-tolyl)propan-1-amine (CAS 1016760-58-9)
- 4,6-Dichloro-3-(difluoromethyl)picolinaldehyde (CAS 1806831-26-4)
- 3-Isobutoxy-N-[2-(4-methylphenoxy)ethyl]aniline (CAS 1040694-88-9)
- Semaglutide impurity 109 (CAS CATO-C4X-2226109)
Why CATO?
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