Silodosin Impurity 22 CAS 239463-72-0
| CAS No. | 239463-72-0 |
| Molecular Formula | C22H25N3O2 |
| Molecular Weight | 363.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 363.45 g/mol gives Silodosin Impurity 22 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Silodosin Impurity 22 (CAS 239463-72-0) is a certified pharmaceutical impurity reference standard with the molecular formula C22H25N3O2 and a molecular weight of 363.45 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Silodosin Impurity 22 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 363.45 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.
CATO manufactures Silodosin Impurity 22 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C22H25N3O2 |
| Molecular Weight | 363.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Related Silodosin Standards
- Silodosin S-amine Isomer (CAS 1201180-97-3)
- Silodosin impurity N1 (CAS 1338365-54-0)
- Silodosin Keto Impurity (CAS 350797-57-8)
- Silodosin Impurity 30 (CAS 1639265-45-4)
- Silodosin Impurity 20 (CAS 1375180-28-1)
- Silodosin Impurity 7 (CAS 350797-56-7)
- Silodosin Impurity 11 (CAS 160969-03-9)
- Silodosin Impurity 15 (CAS 2052161-50-7)
Recommended Standards
- Prasugrel Metabolite M5 (R106583) (CAS 916599-27-4)
- Tert-butyl 2-(4-fluorophenyl)-3-thioxo-1,4,8-triazaspiro[4.5]Dec-1-ene-8-carboxylate (CAS 892295-87-3)
- Pentyl 2-(4-methoxyphenyl)-8-methylquinoline-4-carboxylate (CAS 355421-25-9)
- tert-Butyl 4-(2-(((benzyloxy)carbonyl)amino)ethyl)piperazine-1-carboxylate (CAS 302557-32-0)
- Tofacitinib Impurity 178 (CAS 934524-10-4)
- Bortezomib Impurity 2 (CAS 114457-94-2)
- Pentazocine Impurity 3 (CAS CATO-C4X-31643)
- 3-Bromo-4-(piperidin-3-yl)pyridine (CAS 1256795-28-4)
- {1-methyl-2-[4-(trifluoromethyl)phenyl]piperidin-3-yl}methanamine (CAS 1315368-46-7)
- 5-Bromo-2-(methylthio)pyrimidine-4-carboxamide (CAS 201996-69-2)
- 2-(3-Bromopropyl)-1-methyl-1h-imidazole (CAS 1339343-66-6)
- 1-(6-Methylpyridin-2-yl)-2-(quinolin-4-yl)ethanone (CAS 476472-02-3)
- Methyl 1-(2,2-difluoroethyl)-3-nitro-1H-pyrazole-4-carboxylate (CAS 2101195-09-7)
- Tirzepatide Impurity 1 (CAS 2460751-66-8)
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