Fenoterol EP Impurity A(R,S-Isomer) CAS 391234-97-2
| CAS No. | 391234-97-2 |
| Molecular Formula | C17H21NO4 |
| Molecular Weight | 303.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Fenoterol EP Impurity A(R,S-Isomer) under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Fenoterol EP Impurity A(R,S-Isomer) (CAS 391234-97-2) is a certified pharmaceutical impurity reference standard with the molecular formula C17H21NO4 and a molecular weight of 303.35 g/mol.
Fenoterol EP Impurity A(R,S-Isomer) (C17H21NO4) 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 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 | C17H21NO4 |
| Molecular Weight | 303.35 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Related Fenoterol Standards
- Fenoterol EP Impurity A (S, R-Isomer) (CAS 391234-95-0)
- Fenoterol (CAS 13392-18-2)
- Fenoterol EP Impurity B (Enantiomer Mixture) (CAS 699525-61-6)
- Fenoterol Impurity 4 (CAS 161040-25-1)
- Fenoterol Impurity 6 (CAS CATO-C4X-20776)
- 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)
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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