Sildenafil Impurity 64 CAS 59023-32-4
| CAS No. | 59023-32-4 |
| Molecular Formula | C6H10N4O |
| Molecular Weight | 154.17 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 64.
Sildenafil Impurity 64 (CAS 59023-32-4) is a certified pharmaceutical impurity reference standard with the molecular formula C6H10N4O and a molecular weight of 154.17 g/mol.
Sildenafil Impurity 64 (C6H10N4O) contains an amide group, a hydroxyl group, an ether linkage, an aromatic ring system. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Sildenafil Impurity 64 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H10N4O |
| Molecular Weight | 154.17 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.) | 1973 |
| Nitrogen Atoms | 4 |
Related Sildenafil Standards
- Sildenafil Impurity 42 (CAS 1441-87-8)
- Sildenafil Impurity 67 (CAS 3312-58-1)
- Sildenafil Impurity 40 (CAS 1185292-79-8)
- Sildenafil Impurity 286 (CAS CATO-C4X-1128286)
- Sildenafil Impurity 39 (CAS 76424-56-1)
- Sildenafil Impurity 63 (CAS 247584-81-2)
- Sildenafil Pyrimidine Impurity (CAS 1346600-82-5)
- Sildenafil Impurity 66 (CAS 51409-86-0)
Recommended Standards
- Vildagliptin Impurity 38 (CAS 3705-27-9)
- Vigabatrin Impurity 4 (CAS 71107-19-2)
- Vildagliptin Impurity 37 (CAS 1563006-28-9)
- Metformin EP Impurity C (CAS 1985-46-2)
- Avanafil Impurity 13 (CAS 330785-99-4)
- Digoxin EP Impurity A (CAS 71-63-6)
- Salbutamol Impurity P TFA (CAS CATO-C4X-1176206)
- 2-(5-Amino-1H-pyrazol-1-yl)acetic acid hydrochloride (CAS 2126178-45-6)
- 2-(Benzo[d]thiazol-2-yl)aniline (CAS 29483-73-6)
- (E)-THZ1 (dihydrochloride) (CAS 2095433-94-4)
- tert-Butyl (4-(2-aminoacetamido)cyclohexyl)(ethyl)carbamate (CAS 1353945-14-8)
- 4-Piperazinothieno[3,2-d]pyrimidine (CAS 683274-67-1)
- (E)-Methyl 3-(4-(((2-(2-methyl-1H-indol-3-yl)ethyl)amino)methyl)phenyl)acrylate, 97% (CAS 441741-65-7)
- Insulin Degludec Impurity 14 (CAS CATO-C4X-215714)
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