Dapoxetine Impurity 78 CAS CATO-C4X-143978
| CAS No. | CATO-C4X-143978 |
| Molecular Formula | C21H23NO |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Dapoxetine Impurity 78 (CAS CATO-C4X-143978), a pharmacopoeial impurity reference standard (molecular formula C21H23NOHCl, MW 341.88 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C21H23NOHCl, Dapoxetine Impurity 78 contains a steroid core, 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 341.88 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C21H23NO HCl |
| Molecular Weight | 341.88 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dapoxetine Standards
- Dapoxetine Impurity 74 (CAS 100306-33-0)
- Dapoxetine Impurity 37 (CAS 100306-34-1)
- Dapoxetine Impurity 23 (CAS 102-93-2)
- Dapoxetine Impurity 86 (CAS 103548-16-9)
- rac-Dapoxetine HCL (CAS 1071929-03-7)
- Dapoxetine Impurity 34 (CAS 1083-30-3)
- Dapoxetine Impurity 18 (CAS 1091626-77-5)
- Dapoxetine-d7 HCl (CAS 1132642-56-8(free base))
Recommended Standards
- Difenidol Impurity 4 HCl (CAS 55701-20-7)
- Indometacin Impurity 19 (CAS CATO-C4X-147019)
- Isavuconazole Impurity 18 (CAS CATO-C4X-123618)
- N-Cyclopentyl-5-fluoro-2-nitroaniline (CAS 1250834-99-1)
- tert-Butyl 7-chloro-1H-indazole-1-carboxylate (CAS 1337881-45-4)
- 4-(2-Methylthiazol-4-yl)butan-2-ol (CAS 1478501-94-8)
- (2-(Methylamino)-5-nitrophenyl)(phenyl)methanone (CAS 4958-56-9)
- Co(acac)(dppbz) (CAS 2393894-33-0)
- Cefdinir Impurity 62 (CAS CATO-C4X-121062)
- Peptide 433 (CAS CATO-CPTD788433)
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