Metoprolol Impurity 34 CAS CATO-C4X-136734
| CAS No. | CATO-C4X-136734 |
| Molecular Formula | C19H29NO6 |
| Molecular Weight | 367.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Metoprolol Impurity 34 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, Metoprolol Impurity 34 (CAS CATO-C4X-136734, C19H29NO6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Metoprolol Impurity 34 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 367.44 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C19H29NO6 |
| Molecular Weight | 367.44 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Metoprolol Standards
- Metoprolol Impurity 33 (CAS CATO-C4X-136733)
- Metoprolol Impurity 35 (CAS CATO-C4X-136735)
- Metoprolol Impurity 46 (CAS CATO-C4X-136746)
- Metoprolol Impurity 19 (CAS 230975-30-1)
- Metoprolol EP Impurity J (CAS 163685-37-8)
- Metoprolol Impurity 52 (CAS CATO-C4X-136752)
- Metoprolol Impurity 49 (CAS CATO-C4X-136749)
- Metoprolol Impurity 48 (CAS CATO-C4X-136748)
Recommended Standards
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- Meloxicam impurity 14 (CAS 91-25-8)
- Cilastatin Impurity 11 (CAS 78834-75-0)
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