Azilsartan Impurity 74 CAS 139481-33-7
| CAS No. | 139481-33-7 |
| Molecular Formula | C23H17N3O3 |
| Molecular Weight | 383.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Azilsartan Impurity 74 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.
CATO supplies Azilsartan Impurity 74 (CAS 139481-33-7), a pharmacopoeial impurity reference standard (molecular formula C23H17N3O3, MW 383.40 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Azilsartan Impurity 74 (C23H17N3O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 17.0, corresponding to approximately 17 ring(s) or double-bond equivalent(s). With a molecular weight of 383.40 g/mol, it falls into the moderately-high-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.
Physical & Chemical Properties
| Molecular Formula | C23H17N3O3 |
| Molecular Weight | 383.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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 |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 3 |
Related Azilsartan Standards
- Azilsartan Impurity 158 (CAS 183986-64-3)
- Azilsartan impurity 142 (CAS CATO-C4X-1096142)
- Azilsartan Impurity 17 (CAS CATO-C4X-109617)
- Azilsartan impurity 146 (CAS CATO-C4X-1096146)
- Azilsartan Impurity 10 (CAS 1863930-34-0)
- Azilsartan Impurity 132 (CAS CATO-C4X-1096132)
- Azilsartan Impurity 106 (CAS CATO-C4X-1096106)
- Azilsartan Impurity 89 (CAS 147404-75-9)
Recommended Standards
- N-(5,7-Diphenyl-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)furan-2-carboxamide (CAS 498570-03-9)
- Cefdinir Impurity 2 (CAS CATO-C4X-12102)
- N-(4-Methyl-3-nitrophenyl)-2-phenylquinoline-4-carboxamide (CAS 332176-38-2)
- 3-Methyl cefdinir (CAS 71091-93-5)
- Tenofovir alafenamide Impurity 11 (CAS CATO-C4X-179711)
- Gadodiamide Impurity 6 (CAS CATO-C4X-31436)
- Irbesartan Impurity 28 (CAS 194984-24-2)
- Dehydro Felodipine Ester Lactone (CAS 96558-27-9)
- 4,5-Difluoro-2-(hydroxymethyl)benzimidazole (CAS 1517146-73-4)
- N-(5-((2-((Furan-2-ylmethyl)amino)-2-oxoethyl)thio)-1,3,4-thiadiazol-2-yl)benzamide (CAS 893343-07-2)
- tert-Butyl ((5-acetyl-6-oxo-1,6-dihydropyridin-3-yl)methyl)carbamate (CAS 1393544-96-1)
- (1,1-Dioxidobenzo[b]thiophen-2-yl)methyl carbonochloridate (CAS 135204-19-2)
- Mosapride Impurity 30 (CAS CATO-C4X-104430)
- Met(O)14-Exenatide trifluoroacetate salt (CAS 1678417-38-3)
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