Isavuconazole Impurity 203 CAS CATO-C4X-1236203
| CAS No. | CATO-C4X-1236203 |
| Molecular Formula | C18H25Cl2N3O6 |
| Molecular Weight | 450.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Isavuconazole Impurity 203 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 Isavuconazole Impurity 203 (CAS CATO-C4X-1236203), a pharmacopoeial impurity reference standard (molecular formula C18H25Cl2N3O6, MW 450.31 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C18H25Cl2N3O6, Isavuconazole Impurity 203 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 450.31 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C18H25Cl2N3O6 |
| Molecular Weight | 450.31 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 95% |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Isavuconazole Standards
- Isavuconazole Impurity 119 (CAS CATO-C4X-1236119)
- Isavuconazole Impurity 41 (CAS CATO-C4X-123641)
- Isavuconazole Impurity 140 (CAS CATO-C4X-1236140)
- Isavuconazole-d4 (CAS 1346598-58-0)
- Isavuconazole Impurity 115 (CAS CATO-C4X-1236115)
- Isavuconazole (CAS 241479-67-4)
- Isavuconazole Impurity 24 (CAS 1176988-44-5)
- Isavuconazole Impurity 26 (CAS CATO-C4X-123626)
Recommended Standards
- 3-((2,4-Dichlorophenoxy)methyl)-5-(3-((4-fluorobenzyl)oxy)thiophen-2-yl)-4H-1,2,4-triazole (CAS 400081-69-8)
- Lesinurad Impurity 10 (CAS 2250243-55-9)
- 2-(2,4-Dichlorophenyl)-2-oxoethyl 8-methyl-2-phenylquinoline-4-carboxylate (CAS 355433-09-9)
- 3-Methyl 5-((tetrahydrofuran-2-yl)methyl) 4-(2-bromophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate (CAS 222988-57-0)
- Quinidine Impurity 3 (CAS 485-65-4)
- Ambroxol impurity 109 (CAS CATO-C4X-1085109)
- Alogliptin Impurity 36 (CAS 4318-56-3)
- Methyl 4-(methylamino)-3-oxobutanoate (CAS 201611-50-9)
- 3-(2-Chloro-5-(trifluoromethyl)phenyl)propanal (CAS 1057670-86-6)
- 3-(3,4-Difluorophenoxy)azetidine hydrochloride (CAS 1236862-32-0)
- Piperidin-4-ylmethyl-[1-(toluene-4-sulfonyl)-1H-benzoimidazol-2-yl]-amine hydrochloride (CAS 1146080-48-9)
- 5-(Thiophen-3-yl)-1H-pyrrole-2-carboxylic acid (CAS 72078-42-3)
- 0797AE 338982-34-6 C12H10ClNOS {2-[(2-Chlorophenyl)sulfanyl]-3-pyridinyl}methanol (CAS 338982-34-6)
- D-Ser39-Tirzepatide (CAS CATO-CPTD788679)
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