Emedastine Impurity 41 CAS CATO-C4X-226741
| CAS No. | CATO-C4X-226741 |
| Molecular Formula | C9H7ClN2 |
| Molecular Weight | 178.62 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Emedastine Impurity 41 (CAS CATO-C4X-226741), a pharmacopoeial impurity reference standard (molecular formula C9H7ClN2, MW 178.62 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution, Emedastine Impurity 41 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 178.62 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C9H7ClN2 |
| Molecular Weight | 178.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Emedastine Standards
- Emedastine Impurity 10 (CAS CATO-C4X-226710)
- Emedastine EP Impurity A (CAS 101953-61-1)
- Emedastine Impurity 29 (CAS CATO-C4X-226729)
- Emedastine impurity 35 (CAS CATO-C4X-226735)
- Emedastine EP Impurity B (CAS 87233-54-3)
- Emedastine impurity 36 (CAS CATO-C4X-226736)
- Emedastine Impurity C38 (CAS 101953-62-2)
- Emedastine lmpurity 18 (CAS CATO-C4X-226718)
Recommended Standards
- Piracetam Impurity 23 (CAS CATO-C4X-123523)
- 2-(5-chloro-2-fluorophenyl)acetaldehyde (CAS 1023794-81-1)
- Piracetam Impurity 17 (CAS 64026-51-3)
- 2-(3-chloro-4-fluorophenyl)acetaldehyde (CAS 109346-86-3)
- Tocopherol Impurity 23 (Deshydroxy Tocopherol Quinone) (CAS 75917-94-1)
- Salbutamol Impurity 183 (CAS CATO-C4X-1176183)
- Avanafil Impurity 11 (CAS 1638497-22-9)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com