Nifuratel Impurity 35 CAS CATO-C4X-127235
| CAS No. | CATO-C4X-127235 |
| Molecular Formula | C10H11N3O5S |
| Molecular Weight | 285.28 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.
CATO supplies Nifuratel Impurity 35 (CAS CATO-C4X-127235), a pharmacopoeial impurity reference standard (molecular formula C10H11N3O5S, MW 285.28 g/mol) used for the identification and quantification of trace impurities in APIs.
Nifuratel Impurity 35 (C10H11N3O5S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C10H11N3O5S |
| Molecular Weight | 285.28 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Nifuratel Standards
- Nifuratel (CAS 4936-47-4)
- Nifuratel Impurity 20 (CAS CATO-C4X-127220)
- Nifuratel Impurity 23 (CAS CATO-C4X-127223)
- Nifuratel Impurity 5 (CAS 34143-33-4)
- Nifuratel Impurity 22 (CAS CATO-C4X-127222)
- Nifuratel Impurity 30 (CAS CATO-C4X-127230)
- Nifuratel Impurity 4 (CAS 1445990-09-9)
- Nifuratel Impurity 7 (CAS CATO-C4X-12727)
Recommended Standards
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- Montelukast EP Impurity D (CAS 1187586-61-3)
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- CAS 1803045-02-4 (CAS 1803045-02-4)
- (E)-N-{thieno[2,3-d]pyrimidin-4-yl}-N'-{2-[3-(trifluoromethyl)phenoxy]ethoxy}methanimidamide (CAS 477846-31-4)
- 3-(Benzylthio)-7-chloro-4H-benzo[e][1,2,4]thiadiazine 1,1-dioxide (CAS 40009-50-5)
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