Difelikefalin Impurity 61 CAS 1024829-76-2
| CAS No. | 1024829-76-2 |
| Molecular Formula | C40H59N5O9 |
| Molecular Weight | 753.92 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Difelikefalin Impurity 61 (CAS 1024829-76-2), a pharmacopoeial impurity reference standard (molecular formula C40H59N5O9, MW 753.92 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Difelikefalin Impurity 61 (C40H59N5O9) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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 | C40H59N5O9 |
| Molecular Weight | 753.92 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 5 |
Related Difelikefalin Standards
- Difelikefalin Impurity 62 (CAS CATO-C4X-304162)
- Difelikefalin Impurity 63 (CAS CATO-C4X-304163)
- Difelikefalin Impurity 71 (CAS CATO-C4X-304171)
- Difelikefalin Impurity 72 (CAS CATO-C4X-304172)
- Difelikefalin Impurity 99 (CAS CATO-C4X-304199)
- Difelikefalin Impurity 93 (CAS CATO-C4X-304193)
- Difelikefalin Impurity 20 (CAS CATO-C4X-304120)
- Difelikefalin Impurity 21 (CAS CATO-C4X-304121)
Recommended Standards
- 4-((1S,2R)-5-cyano-5-(4-fluorophenyl)-1-((4-fluorophenyl)amino)-2-((S)-2-oxo-4-phenyloxazolidine-3-carbonyl)-5-((trimethylsilyl)oxy)pentyl)phenyl pivalate (CAS 1232148-24-1)
- H-Phe-Phe-Phe-Phe-Phe-OH (CAS 65757-10-0)
- Semaglutide impurity 37 (CAS CATO-C4X-222637)
- Rifaximin EP Impurity F (CAS 14487-05-9)
- Bepotastine Impurity 14 (CAS 207726-35-0)
- Morinidazole Impurity 33 (CAS CATO-C4X-219633)
- Argatroban Impurity 122 (CAS CATO-C4X-1007122)
- Dec-5-yne-1,10-diol (CAS 92937-83-2)
- Bortezomib Impurity 27 (CAS CATO-C4X-107227)
- Benzyl 3,4-dihydro-2h-spiro[isoquinoline-1,4'-piperidine]-2-carboxylate hydrochloride (CAS 2197063-03-7)
- 2,2-Dimethylthietan-3-amine hydrochloride (CAS 1803603-72-6)
- 2-(2-Benzothiazolylamino)propanoic Acid (CAS 1397002-95-7)
- 2,2-Bis(4-(trifluoromethoxy)phenyl)cyclopropanecarbohydrazide (CAS 2563858-43-3)
- Peptide Impurity 04 (CAS 2913424-91-4)
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