Lemborexant Impurity 19 CAS CATO-C4X-304220
| CAS No. | CATO-C4X-304220 |
| Molecular Formula | C14H17FO3 |
| Molecular Weight | 252.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Lemborexant Impurity 19 (CAS CATO-C4X-304220), a pharmacopoeial impurity reference standard (molecular formula C14H17FO3, MW 252.28 g/mol) used for the identification and quantification of trace impurities in APIs.
Lemborexant Impurity 19 (C14H17FO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), Lemborexant Impurity 19 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 | C14H17FO3 |
| Molecular Weight | 252.28 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 sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
Related Lemborexant Standards
- Lemborexant Impurity 50 (CAS CATO-C4X-304250)
- Lemborexant Impurity 64 (CAS CATO-C4X-304264)
- Lemborexant Impurity 79 (CAS 2898442-70-9)
- Lemborexant Impurity 55 (CAS CATO-C4X-304255)
- Lemborexant Impurity 63 (CAS 1872428-94-8)
- Lemborexant Impurity 98 (CAS CATO-C4X-304298)
- Lemborexant impurity 01 (CAS 1369768-29-5)
- Lemborexant impurity 13 (CAS CATO-C4X-304213)
Recommended Standards
- Mosapride Impurity 41 (CAS CATO-C4X-104441)
- tert-Butyl 6-fluoro-3,4-dihydroquinoxaline-1(2H)-carboxylate (CAS 887590-27-4)
- 4-AMino-5-(2,3-dimethoxy-phenyl)-4h-[1,2,4]triazole-3-thiol (CAS 1003849-04-4)
- tert-Butyl 4-(4-fluorophenyl)-3-oxobutanoate (CAS 2396634-25-4)
- Ertugliflozin impurity 65 (CAS 1500090-85-6)
- Tiotropium Bromide Impurity 14 (CAS 61616-97-5)
- Ivabradine Impurity 101 (CAS CATO-C4X-1119101)
- 1-(2,5-difluoro-4-methoxyphenyl)-5-propyl-1H-pyrazole-4-carboxylic acid (CAS 1461709-16-9)
- 1-Ethynyl-2-fluoro-4-(trifluoromethyl)benzene (CAS 1233506-35-8)
- Thiothinone hydrochloride (CAS 54817-67-3)
- Famciclovir Impurity 2 (CAS 23169-37-1)
- tert-Butyl (4-chloro-3-methoxy-1-oxo-1H-isochromen-7-yl)carbamate (CAS 1422968-79-3)
- 4-(sec-butyl)pyridine (CAS 27876-19-3)
- Delicious Peptide (bovine) (CAS 73984-05-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com