Avanafil Impurity 44 CAS CATO-C4X-111844
| CAS No. | CATO-C4X-111844 |
| Molecular Formula | C16H17Cl2N3O3S |
| Molecular Weight | 402.30 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Avanafil Impurity 44 (CAS CATO-C4X-111844) is a certified pharmaceutical impurity reference standard with the molecular formula C16H17Cl2N3O3S and a molecular weight of 402.30 g/mol.
Based on its molecular formula C16H17Cl2N3O3S, Avanafil Impurity 44 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 402.30 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C16H17Cl2N3O3S |
| Molecular Weight | 402.30 g/mol |
| Purity | 97%+ |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Avanafil Standards
- Avanafil Impurity 115 (CAS CATO-C4X-1118115)
- Avanafil Impurity 117 (CAS CATO-C4X-1118117)
- Avanafil Impurity 121 (CAS CATO-C4X-1118121)
- Avanafil Impurity 134 (CAS CATO-C4X-1118134)
- Avanafil Impurity 22 (CAS 2250242-48-7)
- Avanafil Impurity 45 (CAS CATO-C4X-111845)
- Avanafil Impurity 4 (CAS 1452128-53-8)
- Avanafil Impurity 78 (CAS 372117-76-5)
Recommended Standards
- 2-((5-(2-(4-Bromo-3,5-dimethyl-1h-pyrazol-1-yl)ethyl)-4-ethyl-4h-1,2,4-triazol-3-yl)thio)acetohydrazide (CAS 1005630-40-9)
- 5,5'-(1,4-Phenylenebis(oxy))bis(isobenzofuran-1,3-dione) (CAS 17828-53-4)
- Tectorigenin sodium sulfonate (CAS 807636-25-5)
- tert-Butyl (4-bromothiazol-2-yl)((4-cyanotetrahydro-2H-pyran-4-yl)methyl)carbamate (CAS 2247481-26-9)
- Bilastine Impurity 20 (CAS 202189-76-2)
- Levofloxacin Impurity 62 (CAS CATO-C4X-137162)
- Loxoprofen impurity 120 (CAS CATO-C4X-1488120)
- (R)-2-Amino-3-(methylthio)propan-1-ol (CAS 69977-56-6)
- Methyl 2,6-dichloro-4-nitrobenzoate (CAS 232275-50-2)
- Ethyl 1-(4-chlorophenyl)-6-oxo-4-(propylthio)-1,6-dihydropyridazine-3-carboxylate (CAS 339031-00-4)
- 4-Nitro-1,3-benzenediol (CAS 3163-07-3)
- 2-(Dimethylamino)ethyl hydrogen carbonate (CAS 220858-97-9)
- tert-Butyl N-(4-oxocyclopent-2-en-1-yl)carbamate (CAS 657396-97-9)
- D-[Ser]11-Semaglutide (CAS CATO-CPTD788629)
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