Etizolam Impurity 22 CAS CATO-C4X-350922
| CAS No. | CATO-C4X-350922 |
| Molecular Formula | C17H17ClN4OS |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Etizolam Impurity 22 (CAS CATO-C4X-350922) is a certified pharmaceutical impurity reference standard with the molecular formula C17H17ClN4OSHCl and a molecular weight of 397.32 g/mol.
The molecular framework of Etizolam Impurity 22 (C17H17ClN4OSHCl) is characterized by a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), Etizolam Impurity 22 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C17H17ClN4OS 2*HCl |
| Molecular Weight | 397.32 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Etizolam Standards
- Etizolam Impurity 4 (CAS 110753-14-5)
- Etizolam Impurity C62 (CAS 16437-59-5)
- Etizolam-d3 (methyl-d3) (CAS 1781417-41-1)
- Etizolam Impurity 13 (CAS 247188-22-3)
- Etizolam Impurity 14 (CAS 40054-57-7)
- Etizolam Impurity 9 (CAS 40054-68-0)
- Etizolam Impurity 34 (CAS 40054-69-1)
- Etizolam Impurity C19 (CAS 42753-80-0)
Recommended Standards
- Neostigmine impurity 39 (CAS CATO-C4X-204239)
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- 5-Bromo-2,6-dichloro-1H-1,3-benzimidazole (CAS 1388070-64-1)
- (4-Methyl-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-5-yl)boronic acid (CAS 2096333-78-5)
- n-Allyl-N-((5-chlorothiophen-2-yl)methyl)methanesulfonamide (CAS 1280904-20-2)
- 5-Chloro-1-[(4-chlorophenyl)methyl]-3-(phenylthio)-1H-indole-2-carboxylic Acid (CAS 118414-59-8)
- 2-Acetamido-5-bromo-4-fluorobenzoic acid (CAS 1820649-12-4)
- Glucagon-like peptide 2 (CAS 89750-15-2)
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