Difelikefalin Impurity 73 CAS CATO-C4X-304173
| CAS No. | CATO-C4X-304173 |
| Molecular Formula | C38H55N7O7 |
| Molecular Weight | 721.89 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Difelikefalin Impurity 73 (C38H55N7O7) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 721.89 g/mol, it falls into the high-molecular-weight range. 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).
Difelikefalin Impurity 73 (CAS CATO-C4X-304173) is a certified pharmaceutical impurity reference standard with the molecular formula C38H55N7O7 and a molecular weight of 721.89 g/mol.
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.
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 | C38H55N7O7 |
| Molecular Weight | 721.89 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 |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 7 |
Related Difelikefalin Standards
- Difelikefalin Impurity 19 (CAS CATO-C4X-304119)
- Difelikefalin Impurity 74 (CAS CATO-C4X-304174)
- Difelikefalin Impurity 9 (CAS 1024828-90-7)
- Difelikefalin Impurity 11 (CAS 2219351-44-5)
- Difelikefalin Impurity 13 (CAS 2219351-61-6)
- Difelikefalin Impurity 84 (CAS CATO-C4X-304184)
- Difelikefalin Impurity 16 (CAS CATO-C4X-304116)
- Difelikefalin Impurity 98 (CAS CATO-C4X-304198)
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