Dapoxetine Impurity 39 CAS 13921-90-9
| CAS No. | 13921-90-9 |
| Molecular Formula | C9H11NO2 |
| Molecular Weight | 165.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Dapoxetine Impurity 39 is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Dapoxetine Impurity 39 (CAS 13921-90-9), a pharmacopoeial impurity reference standard (molecular formula C9H11NO2, MW 165.19 g/mol) used for the identification and quantification of trace impurities in APIs.
Dapoxetine Impurity 39 (C9H11NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 manufactures Dapoxetine Impurity 39 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H11NO2 |
| Molecular Weight | 165.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Nitrogen Atoms | 1 |
Related Dapoxetine Standards
- Dapoxetine Impurity 38 (CAS 40856-44-8)
- Dapoxetine Impurity 98 (CAS CATO-C4X-143998)
- Dapoxetine Impurity 16 (CAS 69888-75-1)
- Dapoxetine Impurity 12 (CAS 3330-05-0)
- Dapoxetine Impurity N26 (CAS 2137559-66-9)
- Dapoxetine Impurity 37 (CAS 100306-34-1)
- Dapoxetine Impurity 74 (CAS 100306-33-0)
- Dapoxetine Impurity 36 (CAS 86-56-6)
Recommended Standards
- Phenylephrine Ipurity 54 (CAS 93202-93-8)
- Glipizide Impurity 21 (CAS 101-99-5)
- Norepinephrine Impurity 95 (CAS CATO-C4X-151495)
- Telmisartan Impurity 88 (CAS CATO-C4X-135988)
- Fluoxetine Impurity 15 (CAS CATO-C4X-135215)
- Rosuvastatin Impurity 230 (CAS CATO-C4X-1169230)
- Ketotifen EP Impurity B (Enantiomer Mixture) (CAS 59743-88-3)
- 2-Methoxy-4-methylphenyl chloroformate (CAS 94192-20-8)
- 3',5'-Dimethyl-[1,1'-biphenyl]-3-carboxylic acid (CAS 177734-84-8)
- 3-[(4-{[4-(3-carboxypropanamido)phenyl]disulfanyl}phenyl)carbamoyl]propanoic acid (CAS 329929-00-2)
- 1-(4-Methyl-4h-1,2,4-triazol-3-yl)propan-2-amine (CAS 1250225-93-4)
- 2-(Tetrahydro-2H-pyran-4-yl)pyridine (CAS 26684-64-0)
- (1S,4S)-Bicyclo[2.2.1]hept-5-en-2-one (CAS 16620-79-4)
- Semaglutide impurity 244(Fmoc-His(Fmoc)-Aib-OH) (CAS CATO-C4X-2226244)
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