Fasudil impurity 35 CAS CATO-C4X-136564
| CAS No. | CATO-C4X-136564 |
| Molecular Formula | C15H24Br2N2O2S |
| Molecular Weight | N/A |
| 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 35 (CAS CATO-C4X-136564), a pharmacopoeial impurity reference standard (molecular formula C15H24Br2N2O2SHCl, MW 492.69 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, Fasudil impurity 35 is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 492.69 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C15H24Br2N2O2S HCl |
| Molecular Weight | 492.69 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
| 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
- Edoxaban Impurity 107 (CAS CATO-C4X-1063107)
- Pregabalin Impurity 55 (CAS CATO-C4X-131255)
- Amphotericin B EP Impurity B (CAS 136135-57-4)
- n-((4-(Carboxymethoxy)phenyl)sulfonyl)-n-(2-methoxyphenyl)glycine (CAS 551930-31-5)
- 2-(1-(2-Chlorophenyl)-4,4-difluorocyclohexyl)acetic acid (CAS 2251053-33-3)
- Methyl 2-(cyclopropylamino)-4-(1h-pyrazol-1-yl)butanoate (CAS 1339510-48-3)
- N-Acetyl Metoclopramide-d3 (CAS 105314-01-0)
- [(3-Bromophenyl)methyl](propan-2-yl)amine hydrochloride (CAS 1158475-34-3)
- Serpinin (mouse, rat) (CAS 1363332-88-0)
- Peptide Impurity 70 TFA Salt (CAS CATO-CPTD788570)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com