Lemborexant Impurity 93 CAS CATO-C4X-304293
| CAS No. | CATO-C4X-304293 |
| Molecular Formula | C11H9FO2 |
| Molecular Weight | 192.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system, Lemborexant Impurity 93 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 192.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Lemborexant Impurity 93 (CAS CATO-C4X-304293, C11H9FO2) 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C11H9FO2 |
| Molecular Weight | 192.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
Related Lemborexant Standards
- Lemborexant impurity 4 (CAS 528587-70-4)
- Lemborexant Impurity 53 (CAS CATO-C4X-304253)
- Lemborexant Impurity 61 (CAS 528587-69-1)
- Lemborexant Impurity 62 (CAS CATO-C4X-304262)
- Lemborexant Impurity 75 (CAS 2412536-16-2)
- Lemborexant Impurity 92 (CAS CATO-C4X-304292)
- Lemborexant impurity 3 (CAS 571189-49-6)
- Lemborexant Impurity 38 (CAS 1450904-98-9)
Recommended Standards
- 4-(Trifluoromethyl)benzyl mercaptan (CAS 108499-24-7)
- 1-(1,1-Difluoroethyl)naphthalene (CAS 1204295-97-5)
- 2-(1,1-Difluoroethyl)naphthalene (CAS 1204296-00-3)
- 2-Methyl-3-trifluoromethylbenzenethiol (CAS 1208075-42-6)
- Cefminox Impurity 34 (CAS CATO-C4X-192634)
- Itraconazole Impurity 39 (CAS CATO-C4X-149739)
- Mycophenolate Impurity 24 (CAS CATO-C4X-151524)
- 2-(4-Fluorophenoxy)-4-methoxypyridine-3-carbonitrile (CAS 339016-65-8)
- 3-(2,3,4-Trimethoxyphenyl)acrylic acid (CAS 33130-03-9)
- 1-(1-Methyl-1H-imidazol-5-yl)-3-phenylpropan-1-amine dihydrochloride (CAS 1554289-20-1)
- 1-(Propane-1-sulfonyl)piperazine hydrochloride (CAS 859525-60-3)
- 2-(Aminomethyl)-5-bromo-4-(difluoromethyl)-3-iodopyridine (CAS 1805410-95-0)
- 2-amino-N-(1-methylcyclohexyl)acetamide (CAS 65822-43-7)
- Acetyl tetrapeptide-9(Dermican LS 9837) (CAS 928006-50-2)
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