Letermovir Impurity 69 CAS CATO-C4X-291569
| CAS No. | CATO-C4X-291569 |
| Molecular Formula | C19H17F3N2O4 |
| Molecular Weight | 394.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 394.34 g/mol gives Letermovir Impurity 69 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Letermovir Impurity 69 (CAS CATO-C4X-291569) is a certified pharmaceutical impurity reference standard with the molecular formula C19H17F3N2O4 and a molecular weight of 394.34 g/mol.
Letermovir Impurity 69 (C19H17F3N2O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Letermovir Impurity 69 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.
Physical & Chemical Properties
| Molecular Formula | C19H17F3N2O4 |
| Molecular Weight | 394.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Letermovir Standards
- Letermovir Impurity 4 (CAS 1791412-07-1)
- Letermovir Impurity 101 (CAS CATO-C4X-2915101)
- Letermovir impurity 108 (CAS CATO-C4X-2915108)
- Letermovir Impurity 16 (CAS CATO-C4X-291516)
- Letermovir Impurity 50 (CAS CATO-C4X-291550)
- Letermovir impurity 111 (CAS CATO-C4X-2915111)
- Letermovir impurity 113 (CAS CATO-C4X-2915113)
- Letermovir Impurity 17 (CAS CATO-C4X-291517)
Recommended Standards
- Vericiguat Impurity 4 (CAS CATO-C4X-28964)
- Trifloxystrobin (free acid) (CAS 252913-85-2)
- Z-Gly-His-OH (CAS 38972-84-8)
- (3-(4-Methylpiperazin-1-yl)-5-(trifluoromethyl)pyridin-2-yl)(4-nitrophenyl)methanone (CAS 306977-48-0)
- Ensifentrine impurity 32 (CAS CATO-C4X-335332)
- Caspofungin Impurity 13 (CAS CATO-C4X-157513)
- Cetilistat Impurity 9 (CAS 135498-43-0)
- Ethyl 2-(3-bromo-1H-indazol-5-yl)acetate (CAS 2114116-78-6)
- 2-((4-Benzyl-5-cyclopropyl-4H-1,2,4-triazol-3-yl)thio)-N-(2-cyano-3-methylbutan-2-yl)acetamide (CAS 746612-56-6)
- Travoprost Impurity 10 (CAS 2218532-66-0)
- 2-Ethylhexyl 4-nitrobenzoate (CAS 16397-70-9)
- Remdesivir Impurity 3 (CAS 1355357-49-1)
- 5-(Aminomethyl)pyridin-3-amine dihydrochloride (CAS 59237-41-1)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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