Methylprednisolone Impurity 69 CAS CATO-C4X-191969
| CAS No. | CATO-C4X-191969 |
| Molecular Formula | C44H58O9 |
| Molecular Weight | 730.93 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methylprednisolone Impurity 69 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, Methylprednisolone Impurity 69 (CAS CATO-C4X-191969, C44H58O9) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Methylprednisolone Impurity 69 (C44H58O9) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 730.93 g/mol, it falls into the high-molecular-weight range. 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 | C44H58O9 |
| Molecular Weight | 730.93 g/mol |
| Purity | >90% |
| Storage | Store at room temperature, 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Methylprednisolone Standards
- Methylprednisolone Impurity 56 (CAS CATO-C4X-191956)
- Methylprednisolone impurity 92 (CAS CATO-C4X-191992)
- Methylprednisolone Impurity 80 (CAS CATO-C4X-191980)
- Methylprednisolone Succinate Dimer (CAS CATO-C4X-19196)
- Methylprednisolone impurity 84 (CAS CATO-C4X-191984)
- Methylprednisolone Impurity 40 (CAS CATO-C4X-191940)
- Methylprednisolone Impurity 42 (CAS CATO-C4X-191942)
- MethylPrednisolone Impurity 66 (CAS CATO-C4X-191966)
Recommended Standards
- Meropenem Impurity 32 (CAS CATO-C4X-130932)
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- YM-26734 (CAS 144337-18-8)
- Buserelin EP Impurity D (CAS CATO-C4X-22124)
- Lenvatinib Impurity 59 (CAS CATO-C4X-114059)
- Dolutegravir Impurity 9 (CAS 1863916-87-3)
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