Azelastine Impurity 18 CAS CATO-C4X-139618
| CAS No. | CATO-C4X-139618 |
| Molecular Formula | C9H15NO3 |
| Molecular Weight | 185.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Azelastine Impurity 18 (CAS CATO-C4X-139618), a pharmacopoeial impurity reference standard (molecular formula C9H15NO3, MW 185.22 g/mol) used for the identification and quantification of trace impurities in APIs.
Azelastine Impurity 18 (C9H15NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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 manufactures Azelastine Impurity 18 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H15NO3 |
| Molecular Weight | 185.22 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| Nitrogen Atoms | 1 |
Related Azelastine Standards
- Azelastine Impurity 71 (CAS CATO-C4X-139671)
- Azelastine Impurity 21 (CAS 57676-51-4)
- Azelastine Impurity 29 (CAS 174826-63-2)
- Azelastine Impurity 69 (CAS CATO-C4X-139669)
- Azelastine impurity 54 (CAS CATO-C4X-139654)
- Azelastine impurity 55 (CAS CATO-C4X-139655)
- Azelastine impurity 56 (CAS CATO-C4X-139656)
- Azelastine impurity 57 (CAS CATO-C4X-139657)
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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