Esmolol Impurity 61 CAS CATO-C4X-189161
| CAS No. | CATO-C4X-189161 |
| Molecular Formula | C25H33NO6 |
| Molecular Weight | 443.53 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.
CATO supplies Esmolol Impurity 61 (CAS CATO-C4X-189161), a pharmacopoeial impurity reference standard (molecular formula C25H33NO6, MW 443.53 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Esmolol Impurity 61 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 443.53 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C25H33NO6 |
| Molecular Weight | 443.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Esmolol Standards
- Esmolol Impurity 63 (CAS CATO-C4X-189163)
- Esmolol Impurity 62 (CAS CATO-C4X-189162)
- Esmolol Impurity 82 (CAS CATO-C4X-189182)
- Esmolol Impurity 47 (CAS CATO-C4X-189147)
- Esmolol Impurity 74 (CAS CATO-C4X-189174)
- Esmolol Impurity 64 (CAS CATO-C4X-189164)
- Esmolol Impurity 95 (CAS CATO-C4X-189195)
- Esmolol Impurity 84 (CAS CATO-C4X-189184)
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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