Cenobamate Impurity 28 CAS 220902-32-9
| CAS No. | 220902-32-9 |
| Molecular Formula | C9H6Cl2N4O |
| Molecular Weight | 257.08 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 257.08 g/mol gives Cenobamate Impurity 28 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Cenobamate Impurity 28 (CAS 220902-32-9), a pharmacopoeial impurity reference standard (molecular formula C9H6Cl2N4O, MW 257.08 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Cenobamate Impurity 28 (C9H6Cl2N4O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 257.08 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Cenobamate Impurity 28 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 | C9H6Cl2N4O |
| Molecular Weight | 257.08 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Cenobamate Standards
- Cenobamate Impurity 27 (CAS 1452161-91-9)
- Cenobamate Impurity 25 (CAS CATO-C4X-241625)
- Cenobamate Impurity 53 (CAS CATO-C4X-241653)
- Cenobamate Impurity 59 (CAS CATO-C4X-241659)
- Cenobamate Impurity 54 (CAS 1233712-93-0)
- Cenobamate Impurity 15 (CAS CATO-C4X-241615)
- Cenobamate impurity 01 (CAS 913089-08-4)
- Cenobamate S isomer (CAS CATO-C4X-24161)
Recommended Standards
- Alpha-bromo-3'-acetoxyacetophenone (CAS 38396-89-3)
- Lamotrigine EP Impurity A (CAS 252186-78-0)
- 2 5-Dichlorophenylhydrazine-4-Sulfonic Acid (CAS 118-89-8)
- Salbutamol Impurity 80 (CAS 41104-10-3)
- Perampanel Impurity 56 (CAS CATO-C4X-243056)
- Cefodizime Impurity 5 (CAS 120533-30-4)
- Etoricoxib Impurity 46 (CAS 2708988-48-9)
- (R)-2-((tert-Butoxycarbonyl)amino)-3-(2,3-difluoro-4-hydroxyphenyl)propanoicacid (CAS 1213956-33-2)
- Pyrido[3,2-d]pyrimidine (CAS 254-80-8)
- (2-((2R,6S)-2,6-dimethylmorpholino)pyrimidin-5-yl)boronic acid (CAS 1812220-39-5)
- 2-(2-Chloro-1-benzimidazolyl)ethanol (CAS 40019-65-6)
- 3-(Chloromethyl)-4-(difluoromethyl)-5-methylpyridin-2-amine (CAS 1806920-66-0)
- Bromocriptine Impurity 16 (CAS CATO-C4X-136116)
- Fas C- Terminal Tripeptide (CAS 189109-90-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com