Indobufen Impurity 75 CAS CATO-C4X-179275
| CAS No. | CATO-C4X-179275 |
| Molecular Formula | C21H23NO3 |
| Molecular Weight | 337.41 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 Indobufen Impurity 75.
Indobufen Impurity 75 (CAS CATO-C4X-179275) is a certified pharmaceutical impurity reference standard with the molecular formula C21H23NO3 and a molecular weight of 337.41 g/mol.
The molecular framework of Indobufen Impurity 75 (C21H23NO3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Indobufen Impurity 75 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 | C21H23NO3 |
| Molecular Weight | 337.41 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Indobufen Standards
- Indobufen Impurity 54 (CAS CATO-C4X-179254)
- Indobufen Impurity N2 (CAS 36691-07-3)
- Indobufen Impurity 53 (CAS CATO-C4X-179253)
- Indobufen Impurity 93 (CAS CATO-C4X-179293)
- Indobufen Impurity 26 (CAS CATO-C4X-179226)
- Indobufen Impurity 23 (CAS CATO-C4X-179223)
- Indobufen Impurity 11 (CAS 36691-02-8)
- Indobufen Impurity 61 (CAS CATO-C4X-179261)
Recommended Standards
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- Irbesartan Impurity 9 (CAS 1213252-83-5)
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