Enalapril Maleate Impurity 22 CAS CATO-C4X-133422
| CAS No. | CATO-C4X-133422 |
| Molecular Formula | C20H28N2O5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Enalapril Maleate Impurity 22 (CAS CATO-C4X-133422, C20H28N2O5C4H4O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Enalapril Maleate Impurity 22 (C20H28N2O5C4H4O4) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 manufactures Enalapril Maleate Impurity 22 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 | C20H28N2O5 C4H4O4 |
| Molecular Weight | 492.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Enalapril Standards
- Enalapril tert-Butyl Ester (CAS 108428-39-3)
- Enalapril Maleate Impurity 26 (CAS 115623-21-7)
- Enalapril EP Impurity D (CAS 115729-52-7)
- Enalapril-d5 tert-Butyl Ester (CAS 1356837-84-7)
- Enalapril-d3DISCONTINUED. Please see E555258 and E555252 (CAS 1356847-94-3)
- Enalapril EP Impurity A Maleate (CAS 1356932-13-2)
- Enalapril Impurity 19 (CAS 15121-89-8)
- Enalapril Impurity N1 (CAS 17450-56-5)
Recommended Standards
- Etrasimod Impurity 46 (CAS CATO-C4X-321446)
- Brimonidine Impurity 38 (CAS CATO-C4X-156638)
- Phenoxybenzamine Impurity 4 (CAS 76805-26-0)
- 4-Chloro-1-ethyl-1H-pyrazole-5-carbonitrile (CAS 1708027-10-4)
- 4-[(dimethylamino)methyl]-n'-hydroxybenzene-1-carboximidamide (CAS 500024-79-3)
- 2-Chloro-4-cyclopropoxy-6-isopropylpyridine (CAS 1243479-45-9)
- N-(3-Cyano-4-methyl-5-phenyl-1H-pyrrol-2-yl)acetamide (CAS 61404-77-1)
- 2-((Pyrrolidin-3-ylmethyl)amino)nicotinonitrile hydrochloride (CAS 1258652-51-5)
- 6-methoxy-3-propylbenzo[d]thiazol-2(3H)-imine hydroiodide (CAS 2034154-71-5)
- Semaglutide Impurity 177 (CAS CATO-C4X-2226177)
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