Dapoxetine Impurity 71 CAS 1680175-67-0
| CAS No. | 1680175-67-0 |
| Molecular Formula | C10H13ClO3S |
| Molecular Weight | 248.73 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 Dapoxetine Impurity 71.
CATO supplies Dapoxetine Impurity 71 (CAS 1680175-67-0), a pharmacopoeial impurity reference standard (molecular formula C10H13ClO3S, MW 248.73 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, Dapoxetine Impurity 71 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 248.73 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
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 | C10H13ClO3S |
| Molecular Weight | 248.73 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Dapoxetine Standards
- Dapoxetine Impurity 88 (CAS 871351-43-8)
- Dapoxetine Impurity 13 (CAS 94305-25-6)
- Dapoxetine Impurity 18 (CAS 1091626-77-5)
- Dapoxetine Impurity 63 (CAS CATO-C4X-143963)
- Dapoxetine Impurity 70 (CAS 38262-42-9)
- Dapoxetine Impurity N2 (CAS 53715-52-9)
- Dapoxetine Impurity 17 (CAS 41198-42-9)
- Dapoxetine Impurity 57 (CAS 126113-24-4)
Recommended Standards
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Why CATO?
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com