Fasudil Impurity 41 CAS 5769-35-7
| CAS No. | 5769-35-7 |
| Molecular Formula | C19H24N2O4S2 |
| Molecular Weight | 408.53 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.
Fasudil Impurity 41 (CAS 5769-35-7) is a certified pharmaceutical impurity reference standard with the molecular formula C19H24N2O4S2 and a molecular weight of 408.53 g/mol.
The molecular framework of Fasudil Impurity 41 (C19H24N2O4S2) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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 | C19H24N2O4S2 |
| Molecular Weight | 408.53 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Fasudil Standards
- Fasudil Impurity 45 (CAS CATO-C4X-136545)
- Fasudil Impurity 27 (CAS 5451-44-5)
- Fasudil Impurity 39 (CAS 4403-78-5)
- Fasudil Impurity 26 (CAS 4392-52-3)
- Fasudil Dimer Impurity (CAS 1337967-93-7)
- Fasudil Impurity 21 (CAS CATO-C4X-136521)
- Fasudil Impurity 47 (CAS 105628-70-4)
- Fasudil impurity 66 (CAS CATO-C4X-136566)
Recommended Standards
- Rosuvastatin Impurity 191 (CAS CATO-C4X-1169191)
- 1,2-Bis(5-(methylthio)-4-phenyl-4H-1,2,4-triazol-3-yl)ethane (CAS 72743-87-4)
- Benidipine Impurity 62 (CAS CATO-C4X-112062)
- 1,4-Bis((3-(dimethylamino)propyl)amino)anthracene-9,10-dione (CAS 52869-33-7)
- Oseltamivir Impurity C62 (CAS 1217834-81-5)
- Tacrolimus Impurity 3 (CAS CATO-C4X-13003)
- Tegoprazan Impurity 109 (CAS CATO-C4X-2297109)
- 2-(2-Methylphenyl)-1,3-dioxo-2,3-dihydro-1H-isoindole-5-carboxylic acid (CAS 110768-31-5)
- 1-(4-Bromophenyl)-1H-benzo[d]imidazole-5-carboxylic acid (CAS 452088-75-4)
- 3-Bromo-2-chloro-5,6,7,8-tetrahydroquinoline (CAS 1330751-32-0)
- 2-methoxy-2-methylpropanehydrazide hydrochloride (CAS 1864058-36-5)
- (3-Chloro-4-methylphenyl)(4-iodophenyl)methanone (CAS 951890-96-3)
- 1,3-Dimethyl-2-(prop-2-yn-1-yl)benzene (CAS 73234-91-0)
- Fragment-[9-31]-Semaglutide (CAS CATO-C4X-2226181)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com