Otilonium Bromide Impurity 7 CAS 26090-29-9
| CAS No. | 26090-29-9 |
| Molecular Formula | C28H40N2O4 |
| Molecular Weight | 468.63 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Otilonium Bromide Impurity 7 (CAS 26090-29-9, C28H40N2O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Otilonium Bromide Impurity 7 (C28H40N2O4) 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 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.
As a certified reference material (CRM), Otilonium Bromide 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 | C28H40N2O4 |
| Molecular Weight | 468.63 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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.) | 1964 |
| Nitrogen Atoms | 2 |
Related Otilonium Standards
- Otilonium Bromide impurity 19 (CAS CATO-C4X-194419)
- Otilonium Bromide Impurity 10 (CAS CATO-C4X-194410)
- Otilonium Bromide Impurity 6 (CAS 51444-79-2)
- Otilonium Bromide Impurity 4 (CAS 1007652-84-7)
- Otilonium Bromide Impurity 2 (CAS CATO-C4X-19442)
- Otilonium Bromide Impurity 1 (CAS 255062-85-2)
- Otilonium Bromide Impurity 9 (CAS 27830-12-2)
- Otilonium Bromide (CAS 26095-59-0)
Recommended Standards
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- Dicyclohexyl(2′,4′,6′-trimethyl[1,1′:3′,1′′-terphenyl]-2-yl)phosphine (CAS 1668597-90-7)
- 4,4'-(Furan-2,5-diyl)bis(N-cyclohexylbenzimidamide) (CAS 192525-52-3)
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- Oseltamivir Impurity 136 (CAS CATO-C4X-1720136)
- Methyl 3-bromo-5-cyano-2-(difluoromethyl)benzoate (CAS 1805592-56-6)
- 2-Chloro-1-(3,4-dichlorophenyl)-2,2-difluoroethan-1-one (CAS 1352232-04-2)
- Polygonatine A (CAS 400715-63-1)
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- 2-Bromo-N-(isoxazol-3-yl)acetamide (CAS 92931-33-4)
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