Letermovir Impurity 63 CAS CATO-C4X-291563
| CAS No. | CATO-C4X-291563 |
| Molecular Formula | C29H28F4N4O4 |
| Molecular Weight | 572.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Letermovir Impurity 63 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.
Letermovir Impurity 63 (CAS CATO-C4X-291563) is a certified pharmaceutical impurity reference standard with the molecular formula C29H28F4N4O4 and a molecular weight of 572.55 g/mol.
The molecular framework of Letermovir Impurity 63 (C29H28F4N4O4) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. 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 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 | C29H28F4N4O4 |
| Molecular Weight | 572.55 g/mol |
| Appearance | Pale yellow to 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Letermovir Standards
- rac-Letermovir, >98% (CAS 791116-51-3)
- Letermovir (CAS 917389-32-3)
- Letermovir Impurity 10 (CAS CATO-C4X-291510)
- Letermovir Impurity 103 (CAS CATO-C4X-2915103)
- Letermovir Impurity 19 (CAS CATO-C4X-291519)
- Letermovir Impurity 42 (CAS CATO-C4X-291542)
- Letermovir Impurity 44 (CAS CATO-C4X-291544)
- Letermovir Impurity 47 (CAS CATO-C4X-291547)
Recommended Standards
- ent-Letermovir (CAS 917389-37-8)
- Letermovir Impurity 67 (CAS CATO-C4X-291567)
- Letermovir Impurity 70 (CAS CATO-C4X-291570)
- Letermovir Impurity 8 (CAS CATO-C4X-29158)
- Metaraminol Impurity 31 (CAS CATO-C4X-225231)
- Epinephrine /Adrenaline Impurity 121 (CAS CATO-C4X-1849121)
- Droperidol EP Impurity C (CAS 60373-76-4)
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- N-Methyl-4-bromo-2-ethoxybenzamide (CAS 1245563-16-9)
- 3-Nitro-4-(4-phenylpiperidin-1-yl)-2H-chromen-2-one (CAS 294853-41-1)
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- 8-Allyl-2-((3-hydroxyphenyl)imino)-2H-chromene-3-carboxamide (CAS 898499-91-7)
- Peptide 74 (H-8545.0500) (CAS 132116-39-3)
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