Sildenafil Impurity 260 CAS CATO-C4X-1128260
| CAS No. | CATO-C4X-1128260 |
| Molecular Formula | C15H14Cl2N4O2 |
| Molecular Weight | 353.20 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Sildenafil Impurity 260 (C15H14Cl2N4O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Sildenafil Impurity 260 (CAS CATO-C4X-1128260) is a certified pharmaceutical impurity reference standard with the molecular formula C15H14Cl2N4O2 and a molecular weight of 353.20 g/mol.
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 260 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 | C15H14Cl2N4O2 |
| Molecular Weight | 353.20 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Sildenafil Standards
- Sildenafil Impurity 103 (CAS CATO-C4X-1128103)
- Sildenafil Impurity 306 (CAS CATO-C4X-1128306)
- Sildenafil Impurity 275 (CAS CATO-C4X-1128275)
- Sildenafil Impurity 25 (CAS CATO-C4X-112825)
- Sildenafil Impurity 265 (CAS 1829588-57-9)
- Sildenafil Impurity 266 (CAS CATO-C4X-1128266)
- Sildenafil Impurity 300 (CAS CATO-C4X-1128300)
- Sildenafil Impurity N2 (CAS 139756-04-0)
Recommended Standards
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- 3-Bromo-5-(phenyldiazenyl)-[1,1'-biphenyl]-4-ol (CAS 1192823-92-9)
- Metaraminol Impurity 81 (CAS CATO-C4X-225281)
- CAS 1333110-79-4 (CAS 1333110-79-4)
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- 6-chloro-2,3-dihydrofuro[2,3-b]pyridine (CAS 161454-93-9)
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- 4-(4-Amino-1H-imidazol-2-yl)butanoic acid (CAS 933705-03-4)
- 3-(4-Bromo-2-ethylphenoxy)pyrrolidinehydrochloride (CAS 1220032-64-3)
- 1-(1-(3-Bromophenyl)ethyl)piperidin-4-ol (CAS 1704082-55-2)
- Bisoprolol EP Impurity E (CAS 1217245-60-7)
- Des-Val23-Tirzepatide (CAS CATO-CPTD788950)
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