Sildenafil Impurity 15 CAS 2512206-40-3
| CAS No. | 2512206-40-3 |
| Molecular Formula | C18H22N4O5S |
| Molecular Weight | 406.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Sildenafil Impurity 15 (CAS 2512206-40-3) is a certified pharmaceutical impurity reference standard with the molecular formula C18H22N4O5S and a molecular weight of 406.46 g/mol.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Sildenafil Impurity 15 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 406.46 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 Sildenafil Impurity 15 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 | C18H22N4O5S |
| Molecular Weight | 406.46 g/mol |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2000 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Sildenafil Standards
- Sildenafil Impurity 269 (CAS CATO-C4X-1128269)
- Sildenafil Impurity 292 (CAS CATO-C4X-1128292)
- Sildenafil Impurity 38 (CAS 319491-68-4)
- Sildenafil Impurity 68 (CAS CATO-C4X-112868)
- Sildenafil Impurity 79 (CAS CATO-C4X-112879)
- Sildenafil Impurity 6 (CAS 501120-42-9)
- Sildenafil Impurity 7 (CAS 139756-22-2)
- Sildenafil Impurity 9 (CAS 139756-31-3)
Recommended Standards
- Vardenafil Impurity 53 (CAS CATO-C4X-101753)
- Vardenafil Impurity 15 (CAS CATO-C4X-101715)
- N-{4-[(3-{imidazo[1,2-a]pyridin-2-yl}phenyl)sulfamoyl]phenyl}acetamide (CAS 537021-04-8)
- Glipizide Impurity 12 (CAS CATO-C4X-140712)
- Chlortalidone EP Impurity B (CAS 5270-74-6)
- Eperisone impurity 27 (CAS CATO-C4X-227927)
- Axitinib Impurity 34 (CAS CATO-C4X-107134)
- ZM 306416 Hydrochloride (CAS 196603-47-1)
- 1-(3-(2-(4-Fluorophenyl)-1,3-dioxolan-2-yl)propyl)piperazine (CAS 55846-41-8)
- (2-(1-Cyanovinyl)phenyl)boronic acid (CAS 850568-63-7)
- 7-chloro-4-methoxy-benzofuran (CAS 1427393-29-0)
- (R)-3-Cyclohexylmorpholine (CAS 1269969-36-9)
- 2-(Piperidin-4-ylamino)cyclohexan-1-ol (CAS 1249847-22-0)
- Peptide Impurity 04 (CAS 2913424-91-4)
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