Sildenafil Impurity 65 HCl CAS 2089255-40-1
| CAS No. | 2089255-40-1 |
| Molecular Formula | C7H12N4O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Sildenafil Impurity 65 HCl (CAS 2089255-40-1), a pharmacopoeial impurity reference standard (molecular formula C7H12N4OHCl, MW 204.66 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C7H12N4OHCl, Sildenafil Impurity 65 HCl contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 204.66 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), Sildenafil Impurity 65 HCl 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 | C7H12N4O HCl |
| Molecular Weight | 204.66 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Sildenafil Standards
- Sildenafil Impurity N6 (CAS 1004455-71-3)
- Sildenafil Impurity 258 (CAS 1007310-62-4)
- Sildenafil Impurity 256 (CAS 1027192-9-2)
- Sildenafil Impurity 5 (CAS 1058653-74-9)
- Sildenafil Impurity 29 (CAS 1093065-15-6)
- Sildenafil EP Impurity B (CAS 1094598-75-0)
- Sildenafil-D3 (CAS 1126745-90-1)
- Sildenafil Impurity 62 (CAS 116833-23-9)
Recommended Standards
- Otilonium Bromide Impurity 4 (CAS 1007652-84-7)
- Rizatriptan EP Impurity G (CAS 1000673-59-5)
- Levothyroxine EP Impurity K (CAS 5817-39-0)
- 4-([1,1'-biphenyl]-4-ylamino)-4-oxobutanoic acid (CAS 68905-79-3)
- (E)-({5-[(4-chlorophenyl)sulfanyl]-1-methyl-3-phenyl-1H-pyrazol-4-yl}methylidene)(methoxy)amine (CAS 321998-45-2)
- Ethyltert-butylacetate (CAS 5340-78-3)
- 2-(Propylthio)benzo[d]thiazole (CAS 27410-43-1)
- 1-(2-chloroethoxy)-2-methoxybenzene (CAS 53815-60-4)
- Solvent Red 197 (CAS 52372-39-1)
- Proinsulin C-Peptide (55-89) (human) (CAS 11097-48-6)
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