Ensifentrine Impurity 43 CAS CATO-C4X-335343
| CAS No. | CATO-C4X-335343 |
| Molecular Formula | C10H11N3O2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 278.13 g/mol gives Ensifentrine Impurity 43 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Ensifentrine Impurity 43 (CAS CATO-C4X-335343, C10H11N3O2HClHCl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Ensifentrine Impurity 43 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 278.13 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).
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 | C10H11N3O2 HCl HCl |
| Molecular Weight | 278.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Ensifentrine Standards
- Ensifentrine impurity 49 (CAS 1196-12-9)
- Ensifentrine Impurity 28 (CAS 1266868-06-7)
- Ensifentrine Impurity 29 (CAS 1409292-22-3)
- Ensifentrine (CAS 1884461-72-6)
- Ensifentrine impurity 48 (CAS 20488-59-9)
- Ensifentrine impurity 6 (CAS 298680-38-3)
- Ensifentrine Impurity 22 (CAS 298680-39-4)
- Ensifentrine impurity 17 (CAS 3046226-90-5)
Recommended Standards
- Ziprasidone Impurity 73 (CAS CATO-C4X-124073)
- Terbutaline EP impurity B (CAS 94120-05-5)
- Eltrombopag Impurity 132 (CAS CATO-C4X-1198132)
- 5-Amino-1-(4-iodophenyl)-1H-pyrazole-4-carboxylic acid (CAS 1017794-43-2)
- 2-[4-(4-fluorophenyl)-5-methyl-2-oxo-2,3-dihydro-1,3-thiazol-3-yl]acetic acid (CAS 926193-45-5)
- 1,2-Dimethyl-4-nitro-1H-imidazol-5-amine (CAS 21677-57-6)
- N-(1-(4-chlorophenyl)ethyl)-2-methyl-4-(trifluoromethyl)thiazole-5-carboxamide (CAS 338793-22-9)
- (2S,3R,4S,5S,6R)-6-(acetoxymethyl)-3-iodotetrahydro-2H-pyran-2,4,5-triyl triacetate (CAS 141510-66-9)
- Octyl 3-Octyloxiraneoctanoic Acid (CAS 106-84-3)
- Semaglutide Impurity 13 (CAS CATO-C4X-222613)
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