Ensifentrine Impurity 29 CAS 1409292-22-3
| CAS No. | 1409292-22-3 |
| Molecular Formula | C11H21NO2 |
| Molecular Weight | 199.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ensifentrine Impurity 29 is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Ensifentrine Impurity 29 (CAS 1409292-22-3, C11H21NO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Ensifentrine Impurity 29 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 199.29 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C11H21NO2 |
| Molecular Weight | 199.29 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
Related Ensifentrine Standards
- Ensifentrine impurity 33 (CAS CATO-C4X-335333)
- Ensifentrine Impurity 28 (CAS 1266868-06-7)
- Ensifentrine impurity 49 (CAS 1196-12-9)
- Ensifentrine Impurity 27 (CAS CATO-C4X-335327)
- Ensifentrine impurity 7 (CAS 91209-79-9)
- Ensifentrine impurity 45 (CAS 3088358-10-2)
- Ensifentrine impurity 48 (CAS 20488-59-9)
- Ensifentrine impurity (CAS 4359-64-2)
Recommended Standards
- Rasagiline Impurity 42 (CAS 92249-77-9)
- 1-methyl-N-propyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine (CAS 116035-75-7)
- Tranexamic Impurity 39 (CAS CATO-C4X-177139)
- 1-methyl-N-(propan-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine (CAS 116035-77-9)
- (E)-Cefditoren Impurity 28 (CAS CATO-C4X-135828)
- Salmeterol Impurity 28 (CAS CATO-C4X-105028)
- Urapidil Impurity 56 (CAS CATO-C4X-192456)
- 1-((5-Chloro-4-(piperazin-1-yl)pyridin-3-yl)sulfonyl)-4-methylpiperazine (CAS 1352497-41-6)
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- 4-Oxo-4H-chromene-2-carbaldehyde (CAS 65160-21-6)
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