Fasudil Impurity 59 CAS 1581642-06-9
| CAS No. | 1581642-06-9 |
| Molecular Formula | C14H17N3O2S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C14H17N3O2SHCl, Fasudil Impurity 59 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 327.83 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a process- or degradation-related impurity, Fasudil Impurity 59 (CAS 1581642-06-9, C14H17N3O2SHCl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 | C14H17N3O2S HCl |
| Molecular Weight | 327.83 g/mol |
| Purity | 97%+ |
| 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; 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.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Fasudil Standards
- Fasudil Impurity 49 (CAS 103745-39-7)
- Fasudil Impurity 17 (CAS 105627-79-0)
- Fasudil Impurity 38 (CAS 105627-80-3)
- Fasudil Hydrochloride (CAS 105628-07-7)
- Fasudil Impurity 47 (CAS 105628-70-4)
- Fasudil Hydroxy (CAS 105628-72-6)
- Fasudil Impurity 23 DiHCl (CAS 116700-36-8)
- Fasudil Impurity 32 (CAS 116970-50-4)
Recommended Standards
- Sitagliptin Impurity 44 (CAS 1253055-92-3)
- Finerenone Impurity 226 (CAS CATO-C4X-2880226)
- Articaine impurity 24 (CAS 7400-45-5)
- 2-chloro-7-ethyl-1-methyl-1H-1,3-benzodiazole (CAS 2118131-08-9)
- 1-Benzyl-1H-1,2,4-triazol-5(4H)-one (CAS 212203-04-8)
- (1R,5R)-9-Tosyl-9-azabicyclo[3.3.1]nona-2,6-diene (CAS 35985-98-9)
- Methyl 3-amino-7-bromoquinoline-2-carboxylate (CAS 1823271-76-6)
- (E)-{1-[3-(pyrrolidin-1-yl)-5-(trifluoromethyl)pyridin-2-yl]ethylidene}amino acetate (CAS 882747-20-8)
- 5-Chloro-4-ethoxy-2-fluorophenylboronic acid pinacol ester (CAS 2121513-68-4)
- Insulin Degludec Impurity 9 (CAS CATO-C4X-21579)
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