Benidipine Impurity 7 CAS 74936-81-5
| CAS No. | 74936-81-5 |
| Molecular Formula | C15H14N2O6 |
| Molecular Weight | 318.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Benidipine 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.
Benidipine Impurity 7 (CAS 74936-81-5) is a certified pharmaceutical impurity reference standard with the molecular formula C15H14N2O6 and a molecular weight of 318.28 g/mol.
The molecular framework of Benidipine Impurity 7 (C15H14N2O6) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C15H14N2O6 |
| Molecular Weight | 318.28 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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 |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 2 |
Related Benidipine Standards
- Benidipine Impurity 49 (CAS CATO-C4X-112049)
- Benidipine Impurity 50 (CAS CATO-C4X-112050)
- Benidipine Impurity 6 (CAS 64603-72-1)
- Benidipine Impurity N10 (CAS 166808-97-5)
- Benidipine Impurity 66 (CAS CATO-C4X-112066)
- Benidipine Impurity N50 (CAS 1353946-52-7)
- Benidipine Impurity 8 (CAS CATO-C4X-11208)
- Benidipine Impurity 18 (CAS CATO-C4X-112018)
Recommended Standards
- Levosimendan Impurity 53 (CAS CATO-C4X-130853)
- (2R,3S,4S,5S)-5-(Acetoxymethyl)tetrahydrofuran-2,3,4-triyl Triacetate (CAS 144490-03-9)
- Azacitidine Impurity 31 (CAS 339091-26-8)
- Tert-butyl 3-(3-(difluoromethyl)-4-nitro-1H-pyrazol-1-yl)azetidine-1-carboxylate (CAS 2411707-79-2)
- Paroxetine Impurity G (CAS CATO-C4X-103575)
- Paroxetine EP Impurity I HCl (CAS 220548-73-2)
- Methyl Salicylate EP Impurity J (CAS 22717-57-3)
- Alpha-Humulene (CAS 6753-98-6)
- 5-Chloro-6-hydroxy-3,4-dihydronaphthalen-1(2H)-one (CAS 1035796-32-7)
- 5-Bromo-4-methyl-2,3-dihydro-1H-inden-1-amine (CAS 1273667-47-2)
- 2-Cyano-6-(trifluoromethyl)pyridine-4-sulfonyl chloride (CAS 1393548-15-6)
- 1-{[3-(trifluoromethoxy)phenyl]sulfonyl}piperidine-4-carboxylic acid (CAS 949791-66-6)
- Salannin (CAS 992-20-1)
- Liraglutide Impurity 5 TFA Salt (CAS CATO-C4X-19925)
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