Esmolol Impurity 11 CAS 98903-90-3
| CAS No. | 98903-90-3 |
| Molecular Formula | C29H41NO8 |
| Molecular Weight | 531.64 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Esmolol Impurity 11 (CAS 98903-90-3) is a certified pharmaceutical impurity reference standard with the molecular formula C29H41NO8 and a molecular weight of 531.64 g/mol.
Based on its molecular formula C29H41NO8, Esmolol Impurity 11 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 531.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), Esmolol Impurity 11 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.
Physical & Chemical Properties
| Molecular Formula | C29H41NO8 |
| Molecular Weight | 531.64 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 |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 1 |
Related Esmolol Standards
- Esmolol Impurity 91 (CAS CATO-C4X-189191)
- Esmolol Impurity 22 (CAS CATO-C4X-189122)
- Esmolol Impurity 24 (CAS CATO-C4X-189124)
- Esmolol Impurity 73 (CAS CATO-C4X-189173)
- 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)
Recommended Standards
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- Revefenacin impurity 107 (CAS CATO-C4X-2031107)
- Pristinamycin Impurity 1 (CAS 318498-76-9)
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- Doxofylline Impurity 8 (CAS 123524-29-8)
- Omeprazole Impurity 55 (CAS 58469-06-0)
- 1-Ethyl-6-nitro-2-(1H-pyrrol-1-yl)-1H-indole-3-carbonitrile (CAS 944562-48-5)
- 1-Cyclopropyl-2-(4-methylphenyl)ethan-1-amine (CAS 56595-02-9)
- N-isopentyl-3-nitropyridin-2-amine (CAS 931950-35-5)
- Ethyl 3-(4-chloro-2-fluorophenyl)-3-oxopropanoate (CAS 171102-21-9)
- 2-(Difluoromethyl)-4-hydroxy-3-iodo-5-methoxypyridine (CAS 1806934-61-1)
- 3-(4-Bromobenzoyl)azetidine (CAS 960402-28-2)
- Tau Peptide (337-368) (Repeat 4 Domain) trifluoroacetate salt (CAS 330456-27-4)
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