Ketoconazole EP Impurity E CAS 134071-44-6
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 134071-44-6 |
| Molecular Formula | C21H20Cl2N2O5S |
| Molecular Weight | 483.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Ketoconazole EP Impurity E (CAS 134071-44-6) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C21H20Cl2N2O5S. Molecular weight: 483.36 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C21H20Cl2N2O5S |
| Molecular Weight | 483.36 g/mol |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Ketoconazole Standards
- Ketoconazole impurity 32 (CAS CATO-C4X-147232)
- Ketoconazole impurity 27 (CAS CATO-C4X-147227)
- Ketoconazole impurity 34 (CAS CATO-C4X-147234)
- Ketoconazole Impurity 36 (CAS CATO-C4X-147236)
- Ketoconazole Impurity 6 (CAS 61397-56-6)
- Ketoconazole Impurity 9 (CAS 331949-30-5)
- Ketoconazole EP Impurity A (and enantiomer) (CAS 254912-63-5)
- Ketoconazole Impurity 26 (CAS CATO-C4X-147226)
Recommended Standards
- Onametostat (JNJ-64619178) (CAS 2086772-26-9)
- 2-Chloro-N-(4-chloro-3-(n-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1h-pyrazol-4-yl)sulfamoyl)phenyl)propanamide (CAS 730949-96-9)
- cis-[2-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methyl p-Tolylsulfonate (CAS 155047-76-0)
- Trazodone Impurity 7 (CAS 53818-10-3)
- Flurbiprofen Impurity 94 (CAS 121734-75-6)
- 5-Ethyl-2-mercapto-4,6-dimethylnicotinonitrile (CAS 151693-66-2)
- tert-Butyl 3-(methoxymethyl)azetidine-1-carboxylate (CAS 942308-05-6)
- Bis(3,5-dimethylphenyl)dimethylsilane (CAS 1171890-33-7)
- (2-Methoxyethyl)[(1-methyl-1H-imidazol-2-yl)-methyl]amine dihydrochloride (CAS 1189674-43-8)
- Neuropeptide Y (22-36) (CAS 119019-65-7)
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 13829788188 / jacky.chen@cato-chem.com