Acotiamide Impurity 4 CAS 1809272-85-2
| CAS No. | 1809272-85-2 |
| Molecular Formula | C13H12N2O6S |
| Molecular Weight | 324.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Acotiamide Impurity 4 (CAS 1809272-85-2), a pharmacopoeial impurity reference standard (molecular formula C13H12N2O6S, MW 324.31 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Acotiamide Impurity 4 (C13H12N2O6S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 324.31 g/mol, it falls into the moderately-high-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C13H12N2O6S |
| Molecular Weight | 324.31 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Acotiamide Standards
- Acotiamide Impurity 19 (CAS CATO-C4X-111419)
- Acotiamide Impurity 3 (CAS 1824734-16-8)
- Acotiamide Impurity 10 (CAS CATO-C4X-111410)
- Acotiamide Impurity 20 (CAS CATO-C4X-111420)
- Acotiamide Impurity 37 (CAS 877997-99-4)
- Acotiamide Impurity 46 (CAS CATO-C4X-111446)
- Acotiamide Impurity 1 (CAS CATO-C4X-11141)
- Acotiamide Impurity 18 (CAS CATO-C4X-111418)
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Why CATO?
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