Difelikefalin Impurity 66 CAS CATO-C4X-304166
| CAS No. | CATO-C4X-304166 |
| Molecular Formula | C34H48N4O8 |
| Molecular Weight | 640.77 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Difelikefalin Impurity 66.
Difelikefalin Impurity 66 (CAS CATO-C4X-304166) is a certified pharmaceutical impurity reference standard with the molecular formula C34H48N4O8 and a molecular weight of 640.77 g/mol.
Based on its molecular formula C34H48N4O8, Difelikefalin Impurity 66 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 640.77 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), Difelikefalin Impurity 66 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 | C34H48N4O8 |
| Molecular Weight | 640.77 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Difelikefalin Standards
- Difelikefalin Impurity 96 (CAS CATO-C4X-304196)
- Difelikefalin Impurity 50 (CAS CATO-C4X-304150)
- Difelikefalin Impurity 67 (CAS CATO-C4X-304167)
- Difelikefalin Impurity 70 (CAS CATO-C4X-304170)
- Difelikefalin Impurity 75 (CAS CATO-C4X-304175)
- Difelikefalin Impurity 49 (CAS CATO-C4X-304149)
- Difelikefalin Impurity 76 (CAS CATO-C4X-304176)
- Difelikefalin Impurity 48 (CAS CATO-C4X-304148)
Recommended Standards
- N2-(((9H-Fluoren-9-yl)methoxy)carbonyl)-N6-((4-methoxyphenyl)diphenylmethyl)-D-lysine (CAS 2044710-18-9)
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- 4,4'-(5-Fluorobenzo[c][1,2,5]thiadiazole-4,7-diyl)bis(N,N-diphenylaniline) (CAS 2133835-91-1)
- Fmoc-Lys(4-methoxytrityl)-OH (CAS 159857-60-0)
- Darolutamide Impurity 30 (CAS CATO-C4X-310630)
- Argatroban Impurity 58 (CAS CATO-C4X-100758)
- Linagliptin impurity 165 (CAS CATO-C4X-1101165)
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- 2,6-Difluoro-3-(methylthio)benzonitrile (CAS 1520381-10-5)
- 2-Methoxy-3-(3-methylbut-2-en-1-yl)quinolin-4-ol (CAS 105677-49-4)
- Phthalylsulfathiazole (CAS 85-73-4)
- 6-Aminobenzo[d]isoxazole-3-carbonitrile (CAS 343868-60-0)
- 2-((4-Chlorophenyl)thio)quinolin-8-yl acetate (CAS 141649-51-6)
- Ac-(5-31)Semaglutide (CAS CATO-C4X-2226279)
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