Fexofenadine Impurity 24 CAS 908595-88-0
| CAS No. | 908595-88-0 |
| Molecular Formula | C34H43NO5 |
| Molecular Weight | 545.71 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Fexofenadine Impurity 24 (CAS 908595-88-0), a pharmacopoeial impurity reference standard (molecular formula C34H43NO5, MW 545.71 g/mol) used for the identification and quantification of trace impurities in APIs.
Fexofenadine Impurity 24 (C34H43NO5) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C34H43NO5 |
| Molecular Weight | 545.71 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Fexofenadine Standards
- Fexofenadine Impurity 34 (CAS CATO-C4X-179434)
- Fexofenadine Impurity 35 (CAS CATO-C4X-179435)
- Fexofenadine Impurity 25 (CAS 174483-06-8)
- Fexofenadine-d6 Methyl Ester (CAS 1286458-00-1)
- Fexofenadine N-Oxide (CAS 1422515-52-3)
- Fexofenadine Impurity 17 (CAS 154477-55-1)
- Fexofenadine EP Impurity D (CAS 154825-96-4)
- Fexofenadine Impurity 45 (CAS CATO-C4X-179445)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com