Ziprasidone Impurity 28 CAS CATO-C4X-124028
| CAS No. | CATO-C4X-124028 |
| Molecular Formula | C21H21ClN4O2S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Ziprasidone Impurity 28 (CAS CATO-C4X-124028, C21H21ClN4O2SHCl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C21H21ClN4O2SHCl, Ziprasidone Impurity 28 contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 465.39 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C21H21ClN4O2S HCl |
| Molecular Weight | 465.39 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Ziprasidone Standards
- Ziprasidone-d8 (CAS 1126745-58-1)
- Ziprasidone EP Impurity E (CAS 1159977-04-4)
- Ziprasidone EP Impurity B (CAS 1159977-56-6)
- Ziprasidone EP Impurity C (CAS 1159977-64-6)
- Ziprasidone Related Compound F (CAS 1159977-64-6 (free base))
- Ziprasidone Impurity 9 (CAS 118289-55-7)
- Ziprasidone Impurity 10 (CAS 118305-72-9)
- Ziprasidone impurity 55 (CAS 118305-72-9 (free base))
Recommended Standards
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- Tandospirone Impurity 14 (CAS CATO-C4X-187514)
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- 4-Oxothiochromane-2-carboxylic acid (CAS 226924-15-8)
- 4-Ethyl-5-(2-fluorophenyl)-4H-[1,2,4]triazole-3-thiol (CAS 138417-36-4)
- N-Methyl-1-(pyrimidin-5-yloxy)propan-2-amine (CAS 310881-01-7)
- trans-7,8,9,10-tetrahydro-benzo[a]pyrene-9,10-diol (CAS 61441-24-5)
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