Difelikefalin Impurity 81 CAS CATO-C4X-304181
| CAS No. | CATO-C4X-304181 |
| Molecular Formula | C35H50N6O5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Difelikefalin Impurity 81 (CAS CATO-C4X-304181), a pharmacopoeial impurity reference standard (molecular formula C35H50N6O5HCl, MW 671.28 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Difelikefalin Impurity 81 (C35H50N6O5HCl) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), Difelikefalin Impurity 81 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 | C35H50N6O5 2*HCl |
| Molecular Weight | 671.28 g/mol |
| Purity | 97%+ |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 6 |
Related Difelikefalin Standards
- Difelikefalin Impurity 46 (CAS 1021171-64-1)
- Difelikefalin (CAS 1024828-77-0)
- Difelikefalin Impurity 5 (CAS 1024828-78-1)
- Difelikefalin Impurity 9 (CAS 1024828-90-7)
- Difelikefalin XAcetate (CAS 1024829-44-4)
- Difelikefalin Impurity 65 (CAS 1024829-72-8)
- Difelikefalin Impurity 61 (CAS 1024829-76-2)
- Difelikefalin Impurity 4 (CAS 1173664-52-2)
Recommended Standards
- N-Nitroso Ivabradine impurity 95 (CAS CATO-C4X-111995)
- Polidocanol Impurity 2 (CAS CATO-C4X-29442)
- Selexipag Impurity 3 (CAS CATO-C4X-19613)
- Ensifentrine Impurity 22 (CAS 298680-39-4)
- 2-(2-Aminoethyl)-3a,4,7,7a-tetrahydro-1h-isoindole-1,3(2h)-dione (CAS 1249678-42-9)
- Methyl 2-(6-methoxypyridazin-3-yl)-2H-1,2,3-triazole-4-carboxylate (CAS 1431728-43-6)
- allyl(4-chlorophenyl)sulfane (CAS 15446-14-7)
- 2-(4-(Difluoromethyl)-3-hydroxypyridin-2-yl)acetic acid (CAS 1805038-74-7)
- 2,4-Dibromo-6-iodopyridine (CAS 1806295-81-7)
- Glucagon receptor antagonist I (CAS 438618-32-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com