Difelikefalin Impurity 28 Trifluoroacetic acid CAS CATO-C4X-304128
| CAS No. | CATO-C4X-304128 |
| Molecular Formula | C24H31N3O4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Difelikefalin Impurity 28 Trifluoroacetic acid (CAS CATO-C4X-304128) is a certified pharmaceutical impurity reference standard with the molecular formula C24H31N3O4C2HF3O2 and a molecular weight of 539.55 g/mol.
Structurally, Difelikefalin Impurity 28 Trifluoroacetic acid (C24H31N3O4C2HF3O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 539.55 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 28 Trifluoroacetic acid 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 | C24H31N3O4 C2HF3O2 |
| Molecular Weight | 539.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
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
- Minodronic Impurity 27 (CAS CATO-C4X-124127)
- Digoxin EP Impurity C (CAS 1672-46-4)
- Rosuvastatin Impurity 36 (CAS 147118-40-9)
- (5-(3,4-Difluorophenyl)furan-2-yl)methanamine (CAS 1094391-83-9)
- 4-[(3-bromophenyl)methyl]morpholine-3,5-dione (CAS 1250558-73-6)
- tert-Butylhydroquinone (CAS 1948-33-0)
- Tert-butyl (2S,3S)-3-amino-2-(2-ethoxy-2-oxoethyl)piperidine-1-carboxylate (CAS 1277168-50-9)
- 2-(Chloromethyl)-5-cyano-3-(difluoromethyl)pyridine-4-acetic acid (CAS 1806848-78-1)
- 2-Bromo-1-cyclopropyl-4-methylbenzene (CAS 90841-16-0)
- Tau Peptide (275-305) (Repeat 2 Domain) trifluoroacetate salt (CAS 330456-25-2)
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