Selexipag Impurity 23 CAS 475086-95-4
| CAS No. | 475086-95-4 |
| Molecular Formula | C20H20N2O2 |
| Molecular Weight | 320.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Selexipag Impurity 23.
Selexipag Impurity 23 (CAS 475086-95-4) is a certified pharmaceutical impurity reference standard with the molecular formula C20H20N2O2 and a molecular weight of 320.39 g/mol.
The molecular framework of Selexipag Impurity 23 (C20H20N2O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
CATO manufactures Selexipag Impurity 23 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 | C20H20N2O2 |
| Molecular Weight | 320.39 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 | 2 |
Related Selexipag Standards
- Selexipag Impurity 14 (CAS CATO-C4X-196129)
- Selexipag Impurity 50 (CAS CATO-C4X-196150)
- Selexipag Impurity 41 (CAS CATO-C4X-196141)
- Selexipag Impurity 8 (CAS CATO-C4X-19618)
- Selexipag Impurity 9 (CAS 57038-62-7)
- Selexipag Impurity 65 (CAS CATO-C4X-196165)
- Selexipag Impurity 52 (CAS CATO-C4X-196152)
- Selexipag Impurity 22 (CAS 2068134-98-3)
Recommended Standards
- Nintedanib Impurity 129 (CAS CATO-C4X-1814129)
- Niraparib R-enantiomer p-tosylate (CAS 1038915-58-0)
- Pazopanib Impurity 36 (CAS CATO-C4X-172536)
- Niraparib Impurity 40 (CAS CATO-C4X-232940)
- Palonosetron Impurity 29 (CAS 85977-52-2)
- Nalbuphine impurity 32 (CAS CATO-C4X-147532)
- Torasemide impurity 40 (CAS CATO-C4X-183640)
- Ethyl 3-((2,2-dimethyl-1,3-dioxolan-4-yl)methoxy)-4,4,4-trifluorobutanoate (CAS 886505-47-1)
- 4-(4-fluorophenyl)-2-piperazin-1-yl-6-(trifluoromethyl)pyrimidine,2HCl (CAS 1431964-24-7)
- 2-(3-Amino-4h-thieno[3,4-c]pyrazol-2(6H)-yl)-n-benzylacetamide (CAS 1105190-58-6)
- 2-(Acetoxymethyl)-6-(p-tolyloxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate (CAS 1424170-88-6)
- Baricitinib Impurity 30 HCl (CAS CATO-C4X-226030)
- 3-(3-Carboxyphenyl)-5-methoxybenzoic acid (CAS 1261905-12-7)
- Semaglutide Impurity 7 (CAS CATO-C4X-22267)
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