Emedastine EP Impurity A CAS 101953-61-1
| CAS No. | 101953-61-1 |
| Molecular Formula | C11H14N2O2 |
| Molecular Weight | 206.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Emedastine EP Impurity A (C11H14N2O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO supplies Emedastine EP Impurity A (CAS 101953-61-1), a pharmacopoeial impurity reference standard (molecular formula C11H14N2O2, MW 206.24 g/mol) used for the identification and quantification of trace impurities in APIs.
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), Emedastine EP Impurity A 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 | C11H14N2O2 |
| Molecular Weight | 206.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 2 |
Related Emedastine Standards
- Emedastine impurity 35 (CAS CATO-C4X-226735)
- Emedastine EP Impurity B (CAS 87233-54-3)
- Emedastine Impurity 10 (CAS CATO-C4X-226710)
- Emedastine Impurity C38 (CAS 101953-62-2)
- Emedastine lmpurity 18 (CAS CATO-C4X-226718)
- Emedastine Impurity 41 (CAS CATO-C4X-226741)
- Emedastine Impurity 34 (CAS CATO-C4X-226734)
- Emedastine lmpurity 19 (CAS CATO-C4X-226719)
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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
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com