Azelastine impurity 55 CAS CATO-C4X-139655
| CAS No. | CATO-C4X-139655 |
| Molecular Formula | C8H13NO3 |
| Molecular Weight | 171.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Azelastine impurity 55 (CAS CATO-C4X-139655) is a certified pharmaceutical impurity reference standard with the molecular formula C8H13NO3 and a molecular weight of 171.19 g/mol.
Structurally, Azelastine impurity 55 (C8H13NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 171.19 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), Azelastine impurity 55 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 | C8H13NO3 |
| Molecular Weight | 171.19 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 57 (CAS CATO-C4X-139657)
- Azelastine Impurity 12 (CAS 1878-65-5)
- Azelastine Impurity 34 (CAS 1878-66-6)
- Azelastine Impurity 69 (CAS CATO-C4X-139669)
- Azelastine Impurity 29 (CAS 174826-63-2)
- Azelastine Impurity 21 (CAS 57676-51-4)
- Azelastine Impurity 18 (CAS CATO-C4X-139618)
- Azelastine Impurity 71 (CAS CATO-C4X-139671)
Recommended Standards
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- Cyanocobalamin EP Impurity E (8-epi-cyanocobalamin) (CAS 41325-63-7)
- Isopropyl 4-amino-1-methyl-1h-pyrazole-5-carboxylate (CAS 1480572-06-2)
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- 3-((tert-Butoxycarbonyl)amino)-2-chloroisonicotinic acid (CAS 1312105-89-7)
- 3-methylimidazo[1,5-a]pyrazin-8-amine (CAS 1040751-50-5)
- 2-(4-Bromo-7-hydroxy-1H-indol-3-yl)acetic acid (CAS 1227565-72-1)
- Tirzepatide Impurity 16 (CAS CATO-C4X-324016)
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