Fenoterol Impurity 6 CAS CATO-C4X-20776
| CAS No. | CATO-C4X-20776 |
| Molecular Formula | C19H23NO4 |
| Molecular Weight | 329.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Fenoterol Impurity 6 (CAS CATO-C4X-20776), a pharmacopoeial impurity reference standard (molecular formula C19H23NO4, MW 329.39 g/mol) used for the identification and quantification of trace impurities in APIs.
Fenoterol Impurity 6 (C19H23NO4) contains a flavonoid core, 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).
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.
Physical & Chemical Properties
| Molecular Formula | C19H23NO4 |
| Molecular Weight | 329.39 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Fenoterol Standards
- Fenoterol Impurity 4 (CAS 161040-25-1)
- Fenoterol EP Impurity A (S, R-Isomer) (CAS 391234-95-0)
- Fenoterol EP Impurity A(R,S-Isomer) (CAS 391234-97-2)
- Fenoterol (CAS 13392-18-2)
- Fenoterol EP Impurity B (Enantiomer Mixture) (CAS 699525-61-6)
- Fenoterol O-β-D-Glucuronide (CAS 61046-78-4)
- Fenoterol EP Impurity A HBr (CAS 38964-10-2)
- Fenoterol Hydrobromide Impurity B (CAS 3371-33-3)
Recommended Standards
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- Regadenoson Impurity 19 (CAS CATO-C4X-198519)
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- Gallic Acid Impurity 1 (CAS 1782069-25-3)
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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
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com