Edaravone Impurity 7 CAS 1242471-40-4
| CAS No. | 1242471-40-4 |
| Molecular Formula | C13H16N2O5S |
| Molecular Weight | 312.34 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.
As a process- or degradation-related impurity, Edaravone Impurity 7 (CAS 1242471-40-4, C13H16N2O5S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Edaravone Impurity 7 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 312.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C13H16N2O5S |
| Molecular Weight | 312.34 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Edaravone Standards
- Edaravone Impurity 33 (CAS 2762440-12-8)
- Edaravone Impurity 34 (CAS 2762440-11-7)
- Edaravone impurity 35 (Mixture of Enantiomers) (CAS CATO-C4X-106235)
- Edaravone impurity 36 (Mixture of Enantiomers) (CAS CATO-C4X-106236)
- Edaravone impurity 49 (CAS CATO-C4X-106249)
- Edaravone Impurity 57 (CAS CATO-C4X-106257)
- Edaravone Impurity 1 (CAS 1357477-99-6)
- Edaravone Impurity 3 (CAS 1323485-71-7)
Recommended Standards
- Isavuconazole Impurity 117 (CAS CATO-C4X-1236117)
- Isavuconazole Impurity 19 (CAS CATO-C4X-123619)
- Isavuconazole Impurity 20 (CAS 2170932-49-5)
- Isavuconazole Impurity 21 (CAS CATO-C4X-123621)
- Crotamiton EP Impurity D (CAS 13936-60-2)
- Bisoprolol Impurity 57 Fumarate (CAS CATO-C4X-124757)
- Quetiapine impurity 72 (CAS CATO-C4X-124472)
- 5-Aminopyridine-2-Carbothioamide (CAS 1347815-39-7)
- trans-2-Butenyl acetate (CAS 628-08-0)
- 5-[(2-Chlorophenyl)sulfanyl]-4-phenyl-1,2,3-thiadiazole (CAS 338398-42-8)
- 1-({4-[(4-chlorophenyl)sulfanyl]-3-nitrophenyl}methyl)-4-methylpiperazine (CAS 477869-43-5)
- methyl 2-[3-(tert-butoxy)cyclobutyl]acetate (CAS 1803593-37-4)
- (3R,3aS,6R,6aS)-6-(Methanesulfonyloxy)-hexahydrofuro[3,2-b]furan-3-yl methanesulfonate (CAS 24808-23-9)
- Tau Peptide (274-288) trifluoroacetate salt (CAS 330456-39-8)
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