Dapoxetine Impurity 69 CAS 1621684-78-3
| CAS No. | 1621684-78-3 |
| Molecular Formula | C20H20O4S |
| Molecular Weight | 356.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Dapoxetine Impurity 69 (CAS 1621684-78-3, C20H20O4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C20H20O4S, Dapoxetine Impurity 69 contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 356.44 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.
Physical & Chemical Properties
| Molecular Formula | C20H20O4S |
| Molecular Weight | 356.44 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Sulfur Atoms | 1 |
Related Dapoxetine Standards
- Dapoxetine Impurity 68 (CAS 2716202-38-7)
- Dapoxetine Impurity 95 (CAS CATO-C4X-143995)
- Dapoxetine Impurity 106 (CAS CATO-C4X-1439106)
- Dapoxetine Impurity 107 (CAS CATO-C4X-1439107)
- Dapoxetine Impurity 96 (CAS CATO-C4X-143996)
- Dapoxetine Impurity 1 (CAS 119357-22-1)
- Dapoxetine Impurity 85 (CAS 2245197-11-7)
- Dapoxetine Impurity 102 (CAS 119356-77-3)
Recommended Standards
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