Sildenafil Impurity 3 CAS 139756-02-8
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 139756-02-8 |
| Molecular Formula | C8H14N4O |
| Molecular Weight | 182.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
High-purity Sildenafil Impurity 3 (CAS 139756-02-8) pharmacopoeial impurity standards reference standard. Molecular formula: C8H14N4O. Molecular weight: 182.22 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C8H14N4O |
| Molecular Weight | 182.22 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 4 |
Related Sildenafil Standards
- Sildenafil Impurity 47 (CAS 247583-78-4)
- Sildenafil Impurity 55 (CAS 92945-27-2)
- Sildenafil Impurity 60 (CAS 503064-95-7)
- Sildenafil Impurity 58 (CAS 383427-88-1)
- Sildenafil Impurity 62 (CAS 116833-23-9)
- Sildenafil Impurity 1 (CAS 42926-52-3)
- Sildenafil Pyrimidine Impurity (CAS 1346600-82-5)
- Sildenafil Impurity 30 (CAS 59259-90-4)
Recommended Standards
- Cyclobutanecarboxylic Anhydride (CAS 25774-35-0)
- 1,3,5-Trimethoxy-2-methylbenzene (CAS 14107-97-2)
- 2,4-Dimethoxy-1-(methoxymethyl)benzene (CAS 96519-15-2)
- Letermovir Impurity 95 (CAS CATO-C4X-291595)
- Propranolol Impurity 10 (CAS 27610-48-6)
- 3-(2,4,6-trimethylphenyl)propanal (CAS 19938-06-8)
- 5-((1,4,8,12-Tetraazacyclopentadecan-8-yl)methyl)quinolin-8-ol (CAS 918907-60-5)
- 4-Cyano-3-fluorophenyl (1r,1's,4R,4'R)-4'-pentyl-[1,1'-bi(cyclohexane)]-4-carboxylate (CAS 94353-27-2)
- 6,6-Dimethyl-3-(5-methyl-3-oxo-2-(4-(trifluoromethoxy)phenyl)-2,3-dihydro-1H-pyrzol-4-yl)-1-phenyl-3-(trifluoromethyl)-6,7-dihydro-1H-indole-2,4(3H,5H)-dione (CAS 1067647-43-1)
- Semaglutide impurity 233 (CAS CATO-C4X-2226233)
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