Maribavir Impurity 19 CAS CATO-C4X-300719
| CAS No. | CATO-C4X-300719 |
| Molecular Formula | C21H25Cl2N3O7 |
| Molecular Weight | 502.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Maribavir Impurity 19 (CAS CATO-C4X-300719), a pharmacopoeial impurity reference standard (molecular formula C21H25Cl2N3O7, MW 502.35 g/mol) used for the identification and quantification of trace impurities in APIs.
Maribavir Impurity 19 (C21H25Cl2N3O7) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), Maribavir Impurity 19 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C21H25Cl2N3O7 |
| Molecular Weight | 502.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Maribavir Standards
- Maribavir Impurity 34 (CAS CATO-C4X-300734)
- Maribavir Impurity 35 (CAS CATO-C4X-300735)
- Maribavir Impurity 11 (CAS CATO-C4X-300711)
- Maribavir Impurity 13 (CAS CATO-C4X-300713)
- Maribavir Impurity N26 (CAS 176161-18-5)
- Maribavir Impurity 16 (CAS 176161-21-0)
- Maribavir Impurity 10 (CAS CATO-C4X-300710)
- Maribavir Impurity 14 (CAS 142356-76-1)
Recommended Standards
- Tadalafil Impurity 69 (CAS CATO-C4X-108769)
- 2-((4-(4-Bromophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(3,4-difluorophenyl)acetamide (CAS 477332-88-0)
- Difluprednate Impurity 4 (CAS 1296262-60-6)
- (2E)-2-(4-Bromobenzenesulfonyl)-3-[5-nitro-2-(pyridin-2-ylsulfanyl)phenyl]prop-2-enenitrile (CAS 1025259-60-2)
- Benidipine Impurity 7 (CAS 74936-81-5)
- Benzocaine EP Impurity F (CAS 1877-77-6)
- Doxapram Impurity 29 (CAS CATO-C4X-197329)
- 1-(4-(Trifluoromethyl)phenyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole hydrochloride (CAS 367251-31-8)
- N-(6-acetylbenzo[d][1,3]dioxol-5-yl)-3-(2-chlorophenyl)-5-methylisoxazole-4-carboxamide (CAS 1023518-48-0)
- {[5-(2-methylphenyl)thiophen-2-yl]methyl}(propan-2-yl)amine hydrochloride (CAS 1221725-94-5)
- Palbociclib Impurity 111 (CAS 571189-16-7)
- N-Methyl-1-phenyl-2-(pyrrolidin-1-yl)ethan-1-amine (CAS 130110-09-7)
- 7-Isopropyl-1,7-diazaspiro[3.5]nonane (CAS 1420866-94-9)
- Semaglutide impurity 193 (CAS CATO-C4X-2226193)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com