Paroxetine Impurity 74 CAS CATO-C4X-103574
| CAS No. | CATO-C4X-103574 |
| Molecular Formula | C26H26FNO3 |
| Molecular Weight | 419.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Paroxetine Impurity 74 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.
Paroxetine Impurity 74 (CAS CATO-C4X-103574) is a certified pharmaceutical impurity reference standard with the molecular formula C26H26FNO3 and a molecular weight of 419.49 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Paroxetine Impurity 74 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 419.49 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.
Physical & Chemical Properties
| Molecular Formula | C26H26FNO3 |
| Molecular Weight | 419.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Paroxetine Standards
- Paroxetine EP impurity C (CAS 105813-14-7)
- Paroxetine HCl Anhydrous EP Impurity J (CAS CATO-C4X-103534)
- Paroxetine Impurity 47 (CAS 105813-40-9)
- Paroxetine Impurity 69 (CAS CATO-C4X-103569)
- Paroxetine Impurity 30 (CAS 253768-88-6)
- Paroxetine Impurity 44 (CAS 317323-77-6)
- Paroxetine Impurity 61 (CAS CATO-C4X-103561)
- Paroxetine Impurity 40 (CAS CATO-C4X-103540)
Recommended Standards
- N-(Benzo[d]thiazol-2-yl)-5-(N-(thiophen-2-ylmethyl)sulfamoyl)furan-2-carboxamide (CAS 1171809-87-2)
- Methyl 2-{4,5-dimethoxy-2-[(6-methyl-1,2,3,4-tetrahydroquinolin-1-yl)sulfonyl]phenyl}acetate (CAS 497060-19-2)
- (4-((1H-Imidazol-1-yl)methyl)phenyl)(4-(5-(furan-2-yl)-1,3,4-thiadiazol-2-yl)piperidin-1-yl)methanone (CAS 1226456-65-0)
- Ethyl 2-(3,4,5-trimethoxybenzamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 72625-07-1)
- Tamsulosin Impurity 66 (CAS CATO-C4X-118766)
- Pimozide impurity 1 (CAS CATO-C4X-31151)
- Venlafaxine Impurity 4 (CAS 29903-09-1)
- 2-((5-Thioxo-4,5-dihydro-1,3,4-thiadiazol-2-yl)thio)succinic acid (CAS 125605-97-2)
- (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-methyl-3-(tritylthio)propanoic acid (CAS 725728-37-0)
- (3-(4-Chlorophenyl)-1,2,4-oxadiazol-5-yl)methanol (CAS 5372-40-7)
- Fmoc-homoArg(Mtr)-OH (CAS 1313054-41-9)
- 4-[(4-Chlorophenyl)sulfanyl]-2-(methylsulfanyl)-6-(trifluoromethyl)pyrimidine (CAS 477845-98-0)
- 1-(Tert-butoxycarbonyl)-1H-indole-5-carboxylic acid (CAS 188751-54-4)
- Endo-Ala35-Tirzepatide (CAS CATO-CPTD788687)
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