Fasudil Impurity 12 CAS 1211517-62-2
| CAS No. | 1211517-62-2 |
| Molecular Formula | C9H6ClNO2S |
| Molecular Weight | 227.67 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 Fasudil Impurity 12 (CAS 1211517-62-2), a pharmacopoeial impurity reference standard (molecular formula C9H6ClNO2S, MW 227.67 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C9H6ClNO2S, Fasudil Impurity 12 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 227.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C9H6ClNO2S |
| Molecular Weight | 227.67 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Fasudil Standards
- Fasudil Impurity 23 (CAS 84468-15-5)
- Fasudil Impurity 13 (CAS 748752-50-3)
- Fasudil Impurity N1 (CAS 88551-85-3)
- Fasudil Impurity 31 (CAS CATO-C4X-136531)
- Fasudil Impurity 5 (CAS 2044702-91-0)
- Fasudil Impurity 57 (CAS 146257-38-7)
- Fasudil Impurity 69 (CAS CATO-C4X-136569)
- Fasudil Impurity 44 (CAS 84468-22-4)
Recommended Standards
- Quinoline-6-sulfonyl chloride (CAS 65433-99-0)
- Quinoline-4-sulfonyl chloride (CAS 952651-40-0)
- 4-(4-Chlorophenyl)-2,6-piperidinedione-d4 (CAS 1346597-83-8)
- N-(benzo[c][1,2,5]thiadiazol-5-yl)-2-chloroacetamide (CAS 842956-21-2)
- tert-Butyl ((2S,4R,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate (Ritonavir Impurity ) (CAS 1414933-83-7)
- Proparacaine Impurity 34 (CAS CATO-C4X-202734)
- Indacaterol Impurity 69 (CAS CATO-C4X-150069)
- 5-Nitroisothiazole-3-carboxylic acid, 97% (CAS 36778-15-1)
- 3-(Allylamino)propanohydrazide (CAS 1040689-59-5)
- 7-fluoroisoquinolin-5-amine (CAS 608515-73-7)
- 4-(1H-tetrazol-5-yl)-3-(trifluoromethyl)aniline (CAS 1478048-39-3)
- 5-Chloro-2-methylimidazo[1,2-a]pyrazine (CAS 1289082-44-5)
- 2-Isobutyl-1-oxo-1,4-dihydro-2H-spiro[cyclohexane-1,3-isoquinoline]-4-carboxylic acid (CAS 1225071-45-3)
- Tetrapeptide-3 (CAS 827306-97-8)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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