Ensifentrine impurity 49 CAS 1196-12-9
| CAS No. | 1196-12-9 |
| Molecular Formula | C9H11NO |
| Molecular Weight | 149.19 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.
CATO supplies Ensifentrine impurity 49 (CAS 1196-12-9), a pharmacopoeial impurity reference standard (molecular formula C9H11NO, MW 149.19 g/mol) used for the identification and quantification of trace impurities in APIs.
Ensifentrine impurity 49 (C9H11NO) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C9H11NO |
| Molecular Weight | 149.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Ensifentrine Standards
- Ensifentrine Impurity 28 (CAS 1266868-06-7)
- Ensifentrine Impurity 29 (CAS 1409292-22-3)
- Ensifentrine impurity 33 (CAS CATO-C4X-335333)
- 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)
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Why CATO?
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