Azelastine Impurity 76 CAS CATO-C4X-139676
| CAS No. | CATO-C4X-139676 |
| Molecular Formula | 2*C22H24ClN3O2 |
| Molecular Weight | N/A |
| 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.
Azelastine Impurity 76 (CAS CATO-C4X-139676) is a certified pharmaceutical impurity reference standard with the molecular formula C22H24ClN3O2 and a molecular weight of 397.90 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Azelastine Impurity 76 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 397.90 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures Azelastine Impurity 76 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 | 2*C22H24ClN3O2 |
| Molecular Weight | 397.90 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Azelastine Standards
- Azelastine EP Impurity E (Z-Isomer) (CAS 105279-16-1)
- Azelastine Impurity 46 (CAS 109386-70-1)
- Azelastine EP Impurity B (CAS 110406-94-5)
- Azelastine Impurity 52 (CAS 1107016-94-3)
- Azelastine USP RC B HCI (CAS 117078-69-0)
- Azelastine Impurity 30 (CAS 117078-70-3)
- Azelastine-13C,d3 (CAS 1217019-80-1)
- Azelastine Impurity 17 (CAS 1239312-56-1)
Recommended Standards
- Topiroxostat Impurity 68 (CAS CATO-C4X-105568)
- Cinitapride Impurity 31 (CAS CATO-C4X-290831)
- Nifedipine EP Impurity A (CAS 67035-22-7)
- 5-Bromo-3-chloro-2-ethoxyphenylboronic acid (CAS 1451391-70-0)
- 5-(2-(Hexyloxy)benzylidene)-2-(pyridin-4-yl)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one (CAS 617695-17-7)
- Methyl 3-bromo-4,5-dichlorobenzoate (CAS 1160574-77-5)
- N-Benzyl-1,3:4,6-di-O-benzylidene-2,5-dideoxy-2,5-imino-L-iditol (CAS 1144513-20-1)
- 1-Methyl-5-(4-phenylpiperazin-1-yl)-3-(trifluoromethyl)-1H-pyrazole-4-carbonitrile (CAS 324009-06-5)
- 2-Chlorodibenzo-p-dioxin (CAS 39227-54-8)
- T-Peptide (CAS 2022956-62-1)
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