Letermovir Impurity 1(Racemate) CAS CATO-CP155162
| CAS No. | CATO-CP155162 |
| Molecular Formula | C22H22F4N4O3 |
| Molecular Weight | 466.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Letermovir Impurity 1(Racemate) 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.
CATO supplies Letermovir Impurity 1(Racemate) (CAS CATO-CP155162), a pharmacopoeial impurity reference standard (molecular formula C22H22F4N4O3, MW 466.43 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Letermovir Impurity 1(Racemate) is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 466.43 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C22H22F4N4O3 |
| Molecular Weight | 466.43 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Letermovir Standards
- Letermovir Impurity 20 (CAS CATO-C4X-291520)
- Letermovir Impurity 54 (CAS 2991059-70-0)
- Letermovir Impurity 53 (CAS CATO-C4X-291553)
- Letermovir Impurity 34 (CAS CATO-C4X-291534)
- Letermovir Impurity 127 (CAS CATO-C4X-2915127)
- Letermovir Impurity 22 (CAS CATO-C4X-291522)
- Letermovir Impurity 72 (CAS CATO-C4X-291572)
- Letermovir impurity 129 (CAS 917389-18-5)
Recommended Standards
- 1016987-87-3 b-D-Glucopyranoside,(1S,4aR,5S,7aS)-1,4a,5,7a-tetrahydro-5-[(4-hydroxybenzoyl)oxy]-7-(hydroxymethyl)cyclopenta[c]pyran-1-yl (CAS 1016987-87-3)
- Trimethyl 5,5’,5’’-Methanetriyltris(2-hydroxybenzoate) (CAS 129749-39-9)
- Riociguat Impurity 25 (CAS CATO-C4X-174925)
- 5,5’,5’’-Methanetriyltris(2-hydroxy-3-methylbenzoic Acid) (CAS 129749-43-5)
- Emedastine Impurity 48 (CAS CATO-C4X-226748)
- Cefditoren Impurity 1 (CAS 148774-47-4)
- Ciprofloxacin Impurity 29（HCl） (CAS CATO-C4X-136229)
- Dasatinib Impurity 31 (CAS CATO-C4X-160731)
- (2S)-3,3-dimethylazetidine-2-carboxylic acid (CAS 1860033-50-6)
- 11-methyl-4-(2-methylpropyl)-5-sulfanyl-8-thia-4,6-diazatricyclo[7.4.0.0²,⁷]trideca-1(9),2(7),5-trien-3-one (CAS 728941-35-3)
- Tetrabenazine Impurity 34 (CAS CATO-C4X-274834)
- 1-(2-Ethoxy-3-methylphenyl)-N-methylmethanamine (CAS 709649-55-8)
- 1-(Difluoromethyl)-2,3,5-trifluorobenzene (CAS 1214358-17-4)
- Semaglutide Impurity 124 (CAS CATO-C4X-2226124)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com