Lemborexant Impurity 85 CAS CATO-C4X-304285
| CAS No. | CATO-C4X-304285 |
| Molecular Formula | C11H13FO2 |
| Molecular Weight | 196.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Lemborexant Impurity 85 (C11H13FO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 196.22 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a process- or degradation-related impurity, Lemborexant Impurity 85 (CAS CATO-C4X-304285, C11H13FO2) 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), Lemborexant Impurity 85 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 | C11H13FO2 |
| Molecular Weight | 196.22 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | ≥95% |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
Related Lemborexant Standards
- Lemborexant Impurity 52 (CAS CATO-C4X-304252)
- Lemborexant Impurity 90 (CAS CATO-C4X-304290)
- Lemborexant impurity 1 (CAS 73781-88-1)
- Lemborexant Impurity 45 (CAS CATO-C4X-304245)
- Lemborexant impurity 3 (CAS 571189-49-6)
- Lemborexant impurity 4 (CAS 528587-70-4)
- Lemborexant Impurity 53 (CAS CATO-C4X-304253)
- Lemborexant Impurity 61 (CAS 528587-69-1)
Recommended Standards
- Safinamide Impurity 23 (CAS CATO-C4X-159023)
- 5-(1-Ethyl-1h-pyrazol-4-yl)-1,3,4-oxadiazole-2-thiol (CAS 1004643-47-3)
- Ezetimibe Impurity 111 (CAS CATO-C4X-1098111)
- 5-((3-Methyl-1h-pyrazol-1-yl)methyl)-1,3,4-oxadiazole-2-thiol (CAS 1004643-57-5)
- Triamcinolone Acetonide EP Impurity D (CAS 10392-74-2)
- Pioglitazone impurity 61 (CAS CATO-C4X-138361)
- Benzocaine Impurity 31 (CAS 71134-95-7)
- 2-(Furan-2-yl)imidazo[1,2-b]pyridazine (CAS 951625-69-7)
- (2-Ethoxyacetyl)-l-proline (CAS 1189191-31-8)
- methyl 5-chloroimidazo[1,5-a]pyridine-6-carboxylate (CAS 1168090-92-3)
- 3-{3-cyano-1-[(4-methoxyphenyl)methyl]-4,5-dimethyl-1H-pyrrol-2-yl}-1-(4-fluorophenyl)urea (CAS 866038-95-1)
- N-ethyl-N-(tetrahydro-2H-thiopyran-4-yl)glycine (CAS 1465658-92-7)
- 1-Acetyl-3(5)-perfluorohexyl-5(3)-phenylpyrazole (CAS 511243-93-9)
- Tirzepatide Impurity 9 (CAS CATO-C4X-32409)
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