Dapoxetine Impurity 40 CAS CATO-C4X-143940
| CAS No. | CATO-C4X-143940 |
| Molecular Formula | C19H17ClO |
| Molecular Weight | 296.79 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 40.
As a process- or degradation-related impurity, Dapoxetine Impurity 40 (CAS CATO-C4X-143940, C19H17ClO) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Dapoxetine Impurity 40 (C19H17ClO) contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 296.79 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), Dapoxetine Impurity 40 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 | C19H17ClO |
| Molecular Weight | 296.79 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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 |
| Halogen Content | Cl-containing |
Related Dapoxetine Standards
- Dapoxetine Impurity 52 (CAS 1445281-25-3)
- Dapoxetine Impurity 32 (CAS CATO-C4X-143932)
- Dapoxetine Impurity 26 (CAS 147199-39-1)
- Dapoxetine N-Desmethyl (CAS 119357-18-5)
- Dapoxetine RC 2 (CAS 1776071-89-6)
- Dapoxetine Impurity 92 (CAS CATO-C4X-143992)
- Dapoxetine Impurity 88 (CAS CATO-C4X-143988)
- Dapoxetine Impurity 102 (CAS 119356-77-3)
Recommended Standards
- α-1,2,3,4,5,6-Hexachlorocyclohexane-13C6 (CAS 222966-66-7)
- tert-Butyl 3-(4-chlorophenyl)piperazine-1-carboxylate (CAS 886767-49-3)
- Pentoxyverine Impurity 14 (CAS CATO-C4X-227014)
- Tert-butyl 3-(2-chlorophenyl)piperazine-1-carboxylate (CAS 886767-33-5)
- Vonoprazan Impurity 72 (CAS 2416241-96-6)
- Levocarnitine Impurity 42 (CAS 704208-91-3 (free acid）)
- Dexrazoxane Impurity 40 (CAS CATO-C4X-202040)
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- Semaglutide impurity 58 (CAS CATO-C4X-222658)
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