Ensifentrine Impurity 26 CAS CATO-C4X-335326
| CAS No. | CATO-C4X-335326 |
| Molecular Formula | C15H28ClNO2 |
| Molecular Weight | 289.84 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Ensifentrine Impurity 26 (CAS CATO-C4X-335326, C15H28ClNO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Ensifentrine Impurity 26 (C15H28ClNO2) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C15H28ClNO2 |
| Molecular Weight | 289.84 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Ensifentrine Standards
- Ensifentrine Impurity 2 (CAS 75535-95-4)
- Ensifentrine impurity 50 (CAS 39201-71-3)
- Ensifentrine impurity 16 (CAS CATO-C4X-335316)
- Ensifentrine impurity 44 (CAS CATO-C4X-335344)
- Ensifentrine impurity 46 (CAS CATO-C4X-335346)
- Ensifentrine impurity (CAS 4359-64-2)
- Ensifentrine impurity 48 (CAS 20488-59-9)
- Ensifentrine impurity 45 (CAS 3088358-10-2)
Recommended Standards
- 1-(4-Chlorophenethyl)-2-methyl-1,2,3,4,5,6,7,8-octahydroisoquinoline (CAS 63937-99-5)
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- 1-(3-(4-Chlorophenyl)adamantan-1-yl)ethanamine sulfate (CAS 412956-99-1)
- 1,5-Dibromo-2,3,4-trifluorobenzene (CAS 17299-95-5)
- Sildenafil Impurity N23 (CAS 247583-72-8)
- Barloxavir impurity 95 (CAS CATO-C4X-210895)
- Lurbinectedin Impurity 14 (CAS CATO-C4X-311414)
- Methyl 4-chloro-5-methylthiophene-2-carboxylate (CAS 1399660-78-6)
- N-(3-Amino-4-chlorophenyl)-2-(2,6-dimethylphenoxy)acetamide (CAS 1020058-30-3)
- 3,5-Difluoro-4-(4-methylpiperazin-1-yl)aniline (CAS 1182736-56-6)
- Dichlorofluoromethanesulfenyl chloride (CAS 2712-93-8)
- 3-(2,3-Dimethylphenyl)-4-methyl-1h-pyrazol-5-amine (CAS 2156854-38-3)
- 4-Formylthiophene-3-carbonitrile (CAS 59786-34-4)
- Semaglutide impurity 30 (CAS CATO-C4X-222630)
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