Sildenafil Impurity 265 CAS 1829588-57-9
| CAS No. | 1829588-57-9 |
| Molecular Formula | C17H19ClN4O2 |
| Molecular Weight | 346.81 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 Sildenafil Impurity 265.
As a process- or degradation-related impurity, Sildenafil Impurity 265 (CAS 1829588-57-9, C17H19ClN4O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Sildenafil Impurity 265 (C17H19ClN4O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 346.81 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 Sildenafil Impurity 265 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 | C17H19ClN4O2 |
| Molecular Weight | 346.81 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Sildenafil Standards
- Sildenafil Impurity 25 (CAS CATO-C4X-112825)
- Sildenafil Impurity 266 (CAS CATO-C4X-1128266)
- Sildenafil Impurity N2 (CAS 139756-04-0)
- Sildenafil Impurity 103 (CAS CATO-C4X-1128103)
- Sildenafil Impurity 254 (CAS 479074-08-3)
- Sildenafil Impurity 296 (CAS CATO-C4X-1128296)
- Sildenafil Impurity 260 (CAS CATO-C4X-1128260)
- Sildenafil Impurity 306 (CAS CATO-C4X-1128306)
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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