Esmolol Impurity 91 CAS CATO-C4X-189191
| CAS No. | CATO-C4X-189191 |
| Molecular Formula | C29H41NO8 |
| Molecular Weight | 531.64 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Esmolol Impurity 91 (CAS CATO-C4X-189191), a pharmacopoeial impurity reference standard (molecular formula C29H41NO8, MW 531.64 g/mol) used for the identification and quantification of trace impurities in APIs.
Esmolol Impurity 91 (C29H41NO8) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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 | C29H41NO8 |
| Molecular Weight | 531.64 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Esmolol Standards
- Esmolol Impurity 11 (CAS 98903-90-3)
- Esmolol Impurity 22 (CAS CATO-C4X-189122)
- Esmolol Impurity 24 (CAS CATO-C4X-189124)
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- Esmolol Impurity 85 (CAS CATO-C4X-189185)
- Esmolol Impurity 25 (CAS CATO-C4X-189125)
- Esmolol Impurity 90 (CAS CATO-C4X-189190)
- Esmolol Impurity 2 (CAS 98903-89-0)
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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