Letermovir Impurity N3 CAS CATO-CP155164
| CAS No. | CATO-CP155164 |
| Molecular Formula | C41H45F3N6O5 |
| Molecular Weight | 758.83 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Letermovir Impurity N3 (C41H45F3N6O5) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 21.0, corresponding to approximately 21 ring(s) or double-bond equivalent(s). With a molecular weight of 758.83 g/mol, it falls into the high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Letermovir Impurity N3 (CAS CATO-CP155164, C41H45F3N6O5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
As a certified reference material (CRM), Letermovir Impurity N3 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 | C41H45F3N6O5 |
| Molecular Weight | 758.83 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 66 (CAS CATO-C4X-291566)
- Letermovir Impurity 43 (CAS CATO-C4X-291543)
- Letermovir Impurity N5 (CAS CATO-CP155166)
- 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
- Lurbinectedin Impurity 12 (CAS CATO-C4X-311412)
- Olmesartan Impurity 111 (CAS 1073117-27-7)
- Lurbinectedin Impurity 33 (CAS CATO-C4X-311433)
- Jatrophane 2 (CAS 210108-86-4)
- Roflumilast impurity 17 (CAS 151103-09-2)
- Dalilesen Impurity 17 (CAS CATO-C4X-301017)
- Etofenamate Impurity 2 (CAS CATO-C4X-26032)
- 4-(3,5-Dimethyl-1H-pyrazol-1-yl)benzoic acidhydrochloride (CAS 1185084-16-5)
- ethyl 2-[3-(trifluoromethyl)phenoxy]propanoate (CAS 1280673-40-6)
- Talazoparib Impurity 4 (CAS 1322879-81-1)
- 2-Ethoxy-4-(1H-imidazo[4,5-b]phenazin-2-yl)phenol (CAS 114991-91-2)
- 1-((6-Chloropyridin-2-yl)methyl)piperazine (CAS 1211519-41-3)
- Metformin EP Impurity B Nitrate (CAS 3553-49-9)
- Boc-Cholecystokinin Octapeptide (desulfated) (A-1295.0001) (CAS 25687-34-7)
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