Letermovir Impurity 68 CAS CATO-C4X-291568
| CAS No. | CATO-C4X-291568 |
| Molecular Formula | C30H30F4N4O4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, Letermovir Impurity 68 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 623.04 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a process- or degradation-related impurity, Letermovir Impurity 68 (CAS CATO-C4X-291568, C30H30F4N4O4HCl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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), Letermovir Impurity 68 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 | C30H30F4N4O4 HCl |
| Molecular Weight | 623.04 g/mol |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 4 |
Related Letermovir Standards
- Letermovir Impurity 4 (CAS 1791412-07-1)
- Letermovir impurity 118 (CAS 2758792-75-3)
- Letermovir impurity 119 (CAS 2864441-61-0)
- Letermovir Isopropyl Ester (CAS 2872586-94-0（free base）)
- Letermovir Impurity 54 (CAS 2991059-70-0)
- Letermovir Impurity 27 (CAS 2991059-71-1)
- Letermovir Impurity 28 (CAS 2991299-71-7)
- Letermovir Impurity 32 (CAS 2994645-03-1)
Recommended Standards
- Edaravone Impurity 18 (CAS 1016-41-7)
- Opicapone Impurity 53 (CAS CATO-C4X-240453)
- Cefuroxime Impurity 58 (CAS CATO-C4X-124558)
- n-(4-Acetylthiazol-2-yl)-3-bromobenzamide (CAS 930686-40-1)
- 1,5-Dichloro-2-methoxy-3-(propan-2-yloxy)benzene (CAS 1881293-83-9)
- 1-[(Dimethyl-1,2-oxazol-4-yl)methyl]piperazine (CAS 743416-40-2)
- (2S,5R)-1-Boc-2,5-dimethylpiperazine (CAS 548762-66-9)
- Nefazodone (CAS 83366-66-9)
- N-(4-Fluorophenyl)-3-((4-fluorophenyl)thio)propanamide (CAS 896358-09-1)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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