Sildenafil Impurity 267 CAS 2305789-77-7
Purity ≥95%In StockPharmacopoeial Impurity Standards
| CAS No. | 2305789-77-7 |
| Molecular Formula | C25H34N6OS2 |
| Molecular Weight | 498.71 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Sildenafil Impurity 267 (CAS 2305789-77-7) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C25H34N6OS2. Molecular weight: 498.71 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C25H34N6OS2 |
| Molecular Weight | 498.71 g/mol |
| Purity | ≥95% |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Sildenafil Standards
- Sildenafil Impurity C31 (CAS 2196244-90-1)
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- Sildenafil Impurity 29 (CAS 1093065-15-6)
- Sildenafil Impurity 72 (CAS 2840532-32-1)
- Sildenafil impurity 249 (CAS CATO-C4X-1128249)
- Sildenafil Impurity 252 (CAS CATO-C4X-1128252)
- Sildenafil Impurity 23 (CAS 200575-15-1)
- Sildenafil Impurity 279 (CAS CATO-C4X-1128279)
Recommended Standards
- ALUMINUM DIMYRISTATE (CAS 56639-51-1)
- RH 421 (CAS 107610-19-5)
- 2-(1-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-1H-indol-3-yl)-N-(2,4-dichlorophenyl)acetamide (CAS 477845-11-7)
- Vitamin K1 Impurity 50 (CAS CATO-C4X-220750)
- Asenapine Impurity 7 (CAS 129385-61-1)
- N-(2,4-difluoro-5-nitrophenyl)acetamide (CAS 118266-02-7)
- 2-(Pyridin-2-yl)-1H-pyrrolo[2,3-b]pyridine (CAS 265647-77-6)
- N-(4-(tert-Butyl)phenyl)-3-(4,5-dimethoxy-2-nitrophenyl)acrylamide (CAS 307952-84-7)
- N-(3,4-Difluorophenyl)-2-((4-ethyl-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 577987-30-5)
- Tirzepatide(sodium salt) (CAS 2023788-19-2(free base))
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 13829788188 / jacky.chen@cato-chem.com