Letermovir Impurity N5 CAS CATO-CP155166
| CAS No. | CATO-CP155166 |
| Molecular Formula | C40H43F3N6O5 |
| Molecular Weight | 744.80 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Letermovir Impurity N5 (CAS CATO-CP155166, C40H43F3N6O5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C40H43F3N6O5, Letermovir Impurity N5 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 744.80 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures Letermovir Impurity N5 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 | C40H43F3N6O5 |
| Molecular Weight | 744.80 g/mol |
| 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) | 21.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 6 |
Related Letermovir Standards
- Letermovir Impurity 43 (CAS CATO-C4X-291543)
- Letermovir Impurity 66 (CAS CATO-C4X-291566)
- Letermovir Impurity N3 (CAS CATO-CP155164)
- Letermovir Impurity 120 (CAS CATO-C4X-2915120)
- Letermovir impurity 118 (CAS 2758792-75-3)
- Letermovir impurity 119 (CAS 2864441-61-0)
- Letermovir Impurity 36 (CAS CATO-C4X-291536)
- Letermovir Impurity 32 (CAS 2994645-03-1)
Recommended Standards
- 2'-OMe-U Phosphoramidite (CAS 134031-86-0)
- Irbesartan N-b-D-2,3,4-Tri-O-acetyl-glucuronide Methyl Ester (CAS 224170-69-8)
- DMT-dT Phosphoramidite (CAS 98796-51-1)
- N-(9-((2R,3R,4R,5R)-5-((bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-4-hydroxy-3-(2-(methylamino)-2-oxoethoxy)tetrahydrofuran-2-yl)-9H-purin-6-yl)benzamide (CAS 1025783-21-4)
- Alectinib Impurity 38 (CAS CATO-C4X-283638)
- Lansoprazole Impurity 19 (CAS CATO-C4X-111319)
- Atogepant Impurity 18 (CAS CATO-C4X-328518)
- 3-(1-Phenylethoxy)azetidine (CAS 1341182-94-2)
- 1,1-Dimethoxyheptane (CAS 10032-05-0)
- 4,4,4-trifluoro-3-hydroxy-3-(1H-imidazol-2-yl)butanoic acid (CAS 1211096-65-9)
- Methyl6-chloro-1h-pyrazolo[4,3-c]pyridine-3-carboxylate (CAS 1658461-71-2)
- 2-(Propan-2-yloxy)benzene-1-carbothioamide (CAS 1017031-17-2)
- 1-(1,4-Diazepan-1-yl)-2-methylpropan-1-one (CAS 61903-15-9)
- Semaglutide Impurity 145 (CAS CATO-C4X-2226145)
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