Esmolol Impurity 58 CAS 23838-70-2
| CAS No. | 23838-70-2 |
| Molecular Formula | C9H11NO2 |
| Molecular Weight | 165.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Esmolol Impurity 58 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Esmolol Impurity 58 (CAS 23838-70-2), a pharmacopoeial impurity reference standard (molecular formula C9H11NO2, MW 165.19 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C9H11NO2, Esmolol Impurity 58 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 165.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H11NO2 |
| Molecular Weight | 165.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
Related Esmolol Standards
Recommended Standards
- Betahistine Impurity 50 (CAS CATO-C4X-183850)
- Betahistine impurity 38 (CAS CATO-C4X-183838)
- Lenalidomide Impurity 14 (CAS 18583-89-6)
- Betahistine impurity 37 (CAS CATO-C4X-183837)
- Nebivolol EP Impurity A (CAS 1416402-13-5)
- Hydroxychloroquine Impurity 42 (CAS CATO-C4X-183542)
- Furosemide Impurity 20 (CAS CATO-C4X-140220)
- 3,5-Dimethoxy-4-((4-methylbenzyl)oxy)benzaldehyde (CAS 1154653-85-6)
- 4-Bromo-1-cyclopropoxy-2-fluorobenzene (CAS 1243387-09-8)
- (S)-N-propyl-4-(pyrrolidin-3-yloxy)benzamide (CAS 1212151-59-1)
- 7-Bromo-2,4,6,8-tetrachloro-3-nitroquinoline (CAS 2667057-47-6)
- Isoxazol-3-yl(isoxazol-4-yl)methanone (CAS 60295-63-8)
- 4-Iodo-5-methyl-2-phenylpyridine (CAS 1806421-28-2)
- Semaglutide impurity 248 (CAS CATO-C4X-2226248)
Why CATO?
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