Iguratimod Impurity 2 CAS CATO-C4X-18262
| CAS No. | CATO-C4X-18262 |
| Molecular Formula | C16H17NO5S |
| Molecular Weight | 335.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Iguratimod Impurity 2 (CAS CATO-C4X-18262, C16H17NO5S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Iguratimod Impurity 2 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 335.37 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C16H17NO5S |
| Molecular Weight | 335.37 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Iguratimod Standards
- Iguratimod Impurity 24 (CAS CATO-C4X-182624)
- Iguratimod Impurity 51 (CAS CATO-C4X-182651)
- Iguratimod Impurity 66 (CAS CATO-C4X-182666)
- Iguratimod Impurity 106 (CAS CATO-C4X-1826106)
- Iguratimod Impurity 141 (CAS CATO-C4X-1826141)
- Iguratimod Impurity 108 (CAS CATO-C4X-1826108)
- Iguratimod Impurity 114 (CAS 123663-48-9)
- Iguratimod Impurity 120 (CAS CATO-C4X-1826120)
Recommended Standards
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- Finasteride Impurity 61 (CAS CATO-C4X-164561)
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- 3-Hydroxy-2,6-Dinitro-Benzoic Acid (CAS 67175-28-4)
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