Etelcalcetide Impurity 43 CAS CATO-C4X-324743
| CAS No. | CATO-C4X-324743 |
| Molecular Formula | C37H71N19O10S2 |
| Molecular Weight | 1006.21 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.
As a process- or degradation-related impurity, Etelcalcetide Impurity 43 (CAS CATO-C4X-324743, C37H71N19O10S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C37H71N19O10S2, Etelcalcetide Impurity 43 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 1006.21 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).
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 | C37H71N19O10S2 |
| Molecular Weight | 1006.21 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 19 |
| Sulfur Atoms | 2 |
Related Etelcalcetide Standards
- Etelcalcetide impurity 37 (CAS 1262781-48-5)
- Etelcalcetide Impurity 39 (CAS CATO-C4X-324739)
- Etelcalcetide Impurity 40 (CAS CATO-C4X-324740)
- Etelcalcetide Impurity 42 (CAS CATO-C4X-324742)
- Etelcalcetide Impurity 27 X TFA Salt (CAS CATO-C4X-324727)
- Etelcalcetide impurity 33 (CAS 1262781-27-0)
- Etelcalcetide impurity 34 (CAS 1262781-26-9)
- Etelcalcetide impurity 36 (CAS 1262781-31-6)
Recommended Standards
- Deacetyl Etelcalcetide (CAS CATO-C4X-32475)
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