Esmolol Impurity 73 CAS CATO-C4X-189173
| CAS No. | CATO-C4X-189173 |
| Molecular Formula | C30H44N2O7 |
| Molecular Weight | 544.68 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Esmolol Impurity 73 is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Esmolol Impurity 73 (CAS CATO-C4X-189173) is a certified pharmaceutical impurity reference standard with the molecular formula C30H44N2O7 and a molecular weight of 544.68 g/mol.
The molecular framework of Esmolol Impurity 73 (C30H44N2O7) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C30H44N2O7 |
| Molecular Weight | 544.68 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Esmolol Standards
- Esmolol Impurity 22 (CAS CATO-C4X-189122)
- Esmolol Impurity 24 (CAS CATO-C4X-189124)
- Esmolol Impurity 11 (CAS 98903-90-3)
- Esmolol Impurity 91 (CAS CATO-C4X-189191)
- Esmolol Impurity 2 (CAS 98903-89-0)
- Esmolol Impurity 89 (CAS CATO-C4X-189189)
- Esmolol Impurity 85 (CAS CATO-C4X-189185)
- Esmolol Impurity 25 (CAS CATO-C4X-189125)
Recommended Standards
- Tetra-tert-butyl 2,2'-(carbonylbis(azanediyl))(2S,2'S)-diglutarate (CAS 2206660-96-8)
- (E)-5',5''''-(Ethene-1,2-diyl)bis(([1,1':3',1''-terphenyl]-4,4''-diamine)) (CAS 2361424-80-6)
- Amino-PEG11-amine (CAS 479200-82-3)
- tert-Butyl ((S)-1-((2S,4R)-4-hydroxy-2-(((S)-1-(4-(4-methylthiazol-5-yl)phenyl)ethyl)carbamoyl)pyrrolidin-1-yl)-3,3-dimethyl-1-oxobutan-2-yl)carbamate (CAS 1997302-16-5)
- Paliperidone Impurity 122 (CAS CATO-C4X-1724122)
- Doxorubicin Dimer Impurity 23 (CAS 201278-93-5)
- Gentamicin Impurity 28 (CAS 51846-97-0)
- Methyl 3,4-dichloro-2-hydroxybenzoate (CAS 76732-95-1)
- Mirogabalin Impurity 209 (CAS CATO-C4X-2924209)
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- 2-Chloro-1H-imidazo[4,5-b]pyridine hydrochloride (CAS 132261-24-6)
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