Etizolam Impurity 31 CAS CATO-C4X-350931
| CAS No. | CATO-C4X-350931 |
| Molecular Formula | C15H15ClN2O2S |
| Molecular Weight | 322.81 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, Etizolam Impurity 31 (CAS CATO-C4X-350931, C15H15ClN2O2S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Etizolam Impurity 31 (C15H15ClN2O2S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C15H15ClN2O2S |
| Molecular Weight | 322.81 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Etizolam Standards
- Etizolam Impurity 32 (CAS CATO-C4X-350932)
- Etizolam Impurity 27 (CAS CATO-C4X-350927)
- Etizolam Impurity 9 (CAS 40054-68-0)
- Etizolam Impurity 8 (CAS 54123-29-4)
- Etizolam Impurity 20 (CAS 50508-61-7)
- Etizolam Impurity 15 (CAS 51687-58-2)
- Etizolam Impurity 17 (CAS CATO-C4X-350917)
- Etizolam Impurity 18 (CAS CATO-C4X-350918)
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