Esmolol Impurity 23 CAS CATO-C4X-189123
| CAS No. | CATO-C4X-189123 |
| Molecular Formula | C33H51N3O6 |
| Molecular Weight | 585.77 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Esmolol Impurity 23 (CAS CATO-C4X-189123), a pharmacopoeial impurity reference standard (molecular formula C33H51N3O6, MW 585.77 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 23 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 585.77 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C33H51N3O6 |
| Molecular Weight | 585.77 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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 | 3 |
Related Esmolol Standards
- Esmolol Impurity 2 (CAS 98903-89-0)
- Esmolol Impurity 89 (CAS CATO-C4X-189189)
- Esmolol Impurity 22 (CAS CATO-C4X-189122)
- Esmolol Impurity 24 (CAS CATO-C4X-189124)
- Esmolol Impurity 73 (CAS CATO-C4X-189173)
- Esmolol Impurity 11 (CAS 98903-90-3)
- Esmolol Impurity 91 (CAS CATO-C4X-189191)
- Esmolol Impurity 85 (CAS CATO-C4X-189185)
Recommended Standards
- Heptadecyl 2-acetamido-3-4-6-tri-O-acetyl-2-deoxy-β-D-glucopyranoside (CAS 262856-89-3)
- Trifarotene Impurity 10 (CAS CATO-C4X-313210)
- Cefuroxime Impurity 64 (CAS CATO-C4X-124564)
- (R)-Beta-Dihydroergocryptine (CAS 88660-47-3)
- Ponatinib Impurity 21 (CAS CATO-C4X-226921)
- Bumetanide Impurity 61 (CAS 94610-14-7)
- Dabigatran Impurity 62 (CAS CATO-C4X-108962)
- 3-(4-Fluorophenyl)aniline (CAS 10540-45-1)
- 5-Chloro-4-nitrobenzo[c][1,2,5]selenadiazole (CAS 20718-46-1)
- 2-Methyl-6-nitropyridine (CAS 18368-61-1)
- 1-(3-Ethoxypropyl)-1h-1,2,4-triazol-3-amine (CAS 1481182-13-1)
- Ethyl 2-cyano-2-(6-methylpyridin-2-yl)acetate (CAS 91350-99-1)
- Ethyl 6,7,8-Trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylate (CAS 79660-46-1)
- (D-His1)-Exenatide trifluoroacetate salt (CAS 1678417-09-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com