Levetiracetam Impurity 22 CAS CATO-C4X-106722
| CAS No. | CATO-C4X-106722 |
| Molecular Formula | C8H14ClNO3 |
| Molecular Weight | 207.65 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.
Levetiracetam Impurity 22 (CAS CATO-C4X-106722) is a certified pharmaceutical impurity reference standard with the molecular formula C8H14ClNO3 and a molecular weight of 207.65 g/mol.
The molecular framework of Levetiracetam Impurity 22 (C8H14ClNO3) 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 the protonation state of its nitrogen-containing groups, 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 | C8H14ClNO3 |
| Molecular Weight | 207.65 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Levetiracetam Standards
- Levetiracetam impurity 6 (CAS CATO-C4X-10676)
- Levetiracetam Impurity 6 (CAS 4385-97-1)
- Levetiracetam USP Related Compound A (CAS 102767-31-7)
- Levetiracetam impurity 8 (CAS CATO-C4X-10678)
- Levetiracetam Impurity 33 (CAS 2245069-23-0)
- Levetiracetam Impurity 25 (CAS 263552-76-7)
- Levetiracetam Impurity 32 (CAS 93778-15-5)
- Levetiracetam Impurity 45 (CAS CATO-C4X-106745)
Recommended Standards
- tert-butyl 2-(2-chloroacetamido)acetate (CAS 500309-13-7)
- tert-Butyl (3-chloro-3-oxopropyl)carbamate (CAS 57591-79-4)
- 4-((4-Chloro-1h-pyrazol-1-yl)methyl)aniline (CAS 1001862-74-3)
- N-Chloroacetyl-L-leucine (CAS 688-12-0)
- Carbamazepine EP Impurity A (CAS 3564-73-6)
- Pazopanib Impurity 36 (CAS CATO-C4X-172536)
- Isoprenaline Impurity 23 HCl (CAS 13725-13-8(free base))
- 2-Ethyl-4,5-dimethylthiazole (CAS 873-64-3)
- 2-((Methylthio)(phenylamino)methylene)malononitrile (CAS 17823-65-3)
- Ethyl 2-[6-(Boc-amino)-2-pyridyl]acetate (CAS 408365-87-7)
- (1-ETHYL-5-HYDROXY-1H-PYRAZOL-4-YL)-(3-METHANESULFONYL-2,5-DIMETHYL-4-OXAZOL-2-YL-PHENYL)-METHANONE (CAS 1231603-95-4)
- Methyl 2-{[(4-methylphenyl)sulfonyl]methyl}-4,5,6,7-tetrahydropyrazolo[1,5-a]pyridine-3-carboxylate (CAS 1616500-59-4)
- (2-(4-Bromophenyl)-1,3-dioxolan-2-yl)methanol (CAS 850868-72-3)
- Semaglutide Impurity 142 (CAS CATO-C4X-2226142)
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