Carbazochrome impurity 44 CAS CATO-C4X-229144
| CAS No. | CATO-C4X-229144 |
| Molecular Formula | C9H9N4O5S |
| Molecular Weight | 285.26 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, Carbazochrome impurity 44 (CAS CATO-C4X-229144, C9H9N4O5S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C9H9N4O5S, Carbazochrome impurity 44 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 285.26 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).
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 | C9H9N4O5S |
| Molecular Weight | 285.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Carbazochrome Standards
- Carbazochrome Impurity 19 (CAS CATO-C4X-229119)
- Carbazochrome Impurity 21 (CAS CATO-C4X-229121)
- Carbazochrome Impurity 25 (CAS CATO-C4X-229125)
- Carbazochrome impurity 45 (CAS CATO-C4X-229145)
- Carbazochrome Impurity 22 (CAS CATO-C4X-229122)
- Carbazochrome Impurity 39 (CAS CATO-C4X-229139)
- Carbazochrome Impurity 41 (CAS CATO-C4X-229141)
- Carbazochrome Impurity 43 (CAS CATO-C4X-229143)
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