Diltiazem Impurity 7 CAS CATO-C4X-13687
| CAS No. | CATO-C4X-13687 |
| Molecular Formula | C17H19NO4S |
| Molecular Weight | 333.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C17H19NO4S, Diltiazem Impurity 7 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 333.40 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Diltiazem Impurity 7 (CAS CATO-C4X-13687) is a certified pharmaceutical impurity reference standard with the molecular formula C17H19NO4S and a molecular weight of 333.40 g/mol.
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), Diltiazem 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 | C17H19NO4S |
| Molecular Weight | 333.40 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Diltiazem Standards
- Diltiazem Impurity 15 (CAS CATO-C4X-136815)
- Diltiazem impurity 29 (CAS 30193-56-7)
- Diltiazem Impurity 32 (CAS CATO-C4X-136832)
- Diltiazem EP Impurity B (CAS 87447-47-0)
- Diltiazem Impurity N1 (CAS 42399-48-4)
- Diltiazem Impurity N2 (CAS 42399-50-8)
- Diltiazem Impurity 18 (CAS 131613-02-0)
- Diltiazem Impurity 23 (CAS 119009-50-6)
Recommended Standards
- Lovastatin Impurity 46 (CAS CATO-C4X-168446)
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- Febuxostat Impurity 94 (CAS CATO-C4X-116294)
- Abrocitinib Desmethyl Impurity 7 (CAS 2920890-22-6)
- Nisoldipine Impurity 4 (CAS 87375-91-5)
- Salicylic acid Impurity 28 (CAS 32499-37-9)
- Ioversol Impurity 18 (CAS CATO-C4X-209118)
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