Difelikefalin Impurity 67 CAS CATO-C4X-304167
| CAS No. | CATO-C4X-304167 |
| Molecular Formula | C35H51N5O7 |
| Molecular Weight | 653.81 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Difelikefalin Impurity 67 (CAS CATO-C4X-304167), a pharmacopoeial impurity reference standard (molecular formula C35H51N5O7, MW 653.81 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Difelikefalin Impurity 67 (C35H51N5O7) 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. 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).
As a certified reference material (CRM), Difelikefalin Impurity 67 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 | C35H51N5O7 |
| Molecular Weight | 653.81 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 | 5 |
Related Difelikefalin Standards
- Difelikefalin Impurity 70 (CAS CATO-C4X-304170)
- Difelikefalin Impurity 49 (CAS CATO-C4X-304149)
- Difelikefalin Impurity 66 (CAS CATO-C4X-304166)
- Difelikefalin Impurity 96 (CAS CATO-C4X-304196)
- Difelikefalin Impurity 50 (CAS CATO-C4X-304150)
- Difelikefalin Impurity 97 (CAS CATO-C4X-304197)
- Difelikefalin Impurity 34 (CAS CATO-C4X-304134)
- Difelikefalin (CAS 1024828-77-0)
Recommended Standards
- 4,4'-(9H-carbazole-3,6-diyl)bis(N,N-diphenylaniline) (CAS 885665-26-9)
- [S(R)]-N-[(S)-(1-naphthalenyl)[5-(diphenylphosphino)-9,9-dimethyl-9H-xanthen-4-yl]methyl]-2-methyl-2-propanesulfinamide (CAS 2565792-60-9)
- Viloxazine Impurity 6 (CAS CATO-C4X-31316)
- Compound K (CAS 160729-91-9)
- Paricalcitol Impurity 13 (CAS CATO-C4X-138713)
- Lamivudine Impurity 30 (CAS 18037-10-0)
- Perampanel impurity 47 (CAS CATO-C4X-243047)
- 2-Quinoxalineacetic acid, 3,4-dihydro-3-oxo-,ethyl ester (CAS 14152-56-8)
- Poly(vinylimidazole) (CAS 25232-42-2)
- 7-Amino-3-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 89977-62-8)
- 4-Amino-1,3-dihydrofuro[3,4-c]quinoline-8-carboxylic acid (CAS 2774613-63-5)
- 4-Cyclopropyl-6-(difluoromethyl)-2-(piperazin-1-yl)pyrimidine (CAS 869952-76-1)
- Lumisterol Impurity 3 (CAS 29560-24-5)
- Tirzepatide Impurity 50 (CAS CATO-C4X-324050)
Why CATO?
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