Lemborexant Impurity 91 CAS 3070371-40-0
| CAS No. | 3070371-40-0 |
| Molecular Formula | C17H19FN2O2 |
| Molecular Weight | 302.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Lemborexant Impurity 91 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies Lemborexant Impurity 91 (CAS 3070371-40-0), a pharmacopoeial impurity reference standard (molecular formula C17H19FN2O2, MW 302.34 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Lemborexant Impurity 91 (C17H19FN2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 302.34 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C17H19FN2O2 |
| Molecular Weight | 302.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | ≥95% |
| Storage | Store at 2-8°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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2005 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Lemborexant Standards
- Lemborexant Impurity N1 (CAS 1369767-24-7)
- Lemborexant Impurity 23 (CAS 3037659-15-4)
- Lemborexant Impurity 56 (CAS CATO-C4X-304256)
- Lemborexant Impurity 71 (CAS CATO-C4X-304271)
- Lemborexant Impurity 83 (CAS CATO-C4X-304283)
- Lemborexant Impurity 44 (CAS CATO-C4X-304244)
- Lemborexant Impurity 37 (CAS 1369767-26-9)
- Lemborexant Impurity 70 (CAS CATO-C4X-304270)
Recommended Standards
- 1-(1,3-Dimethyl-1H-pyrazol-4-yl)-2-mercapto-4-((1-methyl-1H-pyrazol-4-yl)methylene)-1H-imidazol-5(4H)-one (CAS 1005626-64-1)
- N-(4-Methoxybenzo[d]thiazol-2-yl)-1,5-dimethyl-1H-pyrazole-3-carboxamide (CAS 1013756-86-9)
- N-(4-Methoxybenzo[d]thiazol-2-yl)-1,3-dimethyl-1H-pyrazole-5-carboxamide (CAS 1013798-29-2)
- N-(6-Methoxybenzo[d]thiazol-2-yl)-1,3-dimethyl-1H-pyrazole-5-carboxamide (CAS 1013807-96-9)
- Docetaxel Impurity 84 (CAS CATO-C4X-161984)
- Posaconazole Impurity 87 (CAS CATO-C4X-120887)
- Empagliflozin Impurity 66 (CAS CATO-C4X-1065166)
- N-(4-methoxyphenyl)-2-((3-(trifluoromethyl)phenyl)sulfonyl)acetamide (CAS 339097-47-1)
- 6-Bromo-3H-imidazo[4,5-β]pyridine-7-carboxylic Acid (CAS 117888-98-9)
- Prusogliptin Impurity 17 (CAS CATO-C4X-328417)
- Ethyl 7-oxo-7-(3,4,5-trichlorophenyl)heptanoate (CAS 951887-59-5)
- 2-Nitro-1-(3-nitrophenyl)ethan-1-ol (CAS 18731-45-8)
- Tetrakis(2,2,6,6-tetramethyl-3,5-heptanedionato)niobium(IV) (CAS 41706-15-4)
- [β-Asp]9-Semaglutide (CAS CATO-CPTD788605)
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