Esmolol Impurity 25 CAS CATO-C4X-189125
| CAS No. | CATO-C4X-189125 |
| Molecular Formula | C28H39NO8 |
| Molecular Weight | 517.61 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Esmolol Impurity 25 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 25 (CAS CATO-C4X-189125), a pharmacopoeial impurity reference standard (molecular formula C28H39NO8, MW 517.61 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Esmolol Impurity 25 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 517.61 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C28H39NO8 |
| Molecular Weight | 517.61 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 90 (CAS CATO-C4X-189190)
- Esmolol Impurity 85 (CAS CATO-C4X-189185)
- Esmolol Impurity 11 (CAS 98903-90-3)
- Esmolol Impurity 91 (CAS CATO-C4X-189191)
- Esmolol Impurity 66 (CAS CATO-C4X-189166)
- Esmolol Impurity 22 (CAS CATO-C4X-189122)
- Esmolol Impurity 24 (CAS CATO-C4X-189124)
- Esmolol Impurity 73 (CAS CATO-C4X-189173)
Recommended Standards
- (2S)-2-[[[[3,5-Bis(trifluoromethyl)phenyl]amino]thioxomethyl]amino]-N-3,3-trimethyl-N-(phenylmethyl)butanamide (S)-2-[[3,5-Bis(trifluoromethyl)phenyl]thioureido]-N-benzyl-N,3,3-trimethylbutanamide 959979-30-7 (CAS 959979-30-7)
- 5-Hydroxymethyl Tolterodine Glucuronide (CAS 210573-52-7)
- (6R,8S)-N-[4-(diethoxyphosphorylmethyl)phenyl]-8-methyl-9-oxo-5,6-dihydrothiepino[4,5-f][1,3]benzodioxole-6-carboxamide (CAS 180185-61-9)
- Dimethyl 4,4'-((3-(acetoxydiphenylmethyl)phenyl)azanediyl)dibutanoate (CAS 1373882-78-0)
- Lopinavir Impurity 27 (CAS CATO-C4X-168227)
- Emtricitabine Cyclic Impurity 40 (CAS CATO-C4X-123240)
- Levodropropizine EP Impurity A (Dextrodropropizine) (CAS 99291-24-4)
- (SP-5-14)-[N-[2-[Bis(1,1-dimethylethyl)phosphino-κP]ethyl]-1-methyl-1H-imidazole-2-methanamine-κN2,κN3]dichlorocobalt (CAS 2034147-08-3)
- 2-[3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-bicyclo[1.1.1]pentanyl]ethanol (CAS 2784646-57-5)
- Lauterine (CAS 28200-65-9)
- 6-Bromo-2-methyl-8-nitroquinoline (CAS 61854-62-4)
- 5-(3-Carbamoylphenyl)picolinic acid (CAS 1261912-75-7)
- 3,4-Dihydro-1H-2-benzopyran-1-carbaldehyde (CAS 83501-37-5)
- Acetyl-Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt (CAS 2022956-56-3)
Why CATO?
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