Paroxetine Impurity 56 CAS 202534-94-9
| CAS No. | 202534-94-9 |
| Molecular Formula | C15H16FNO4 |
| Molecular Weight | 293.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Paroxetine Impurity 56 is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Paroxetine Impurity 56 (CAS 202534-94-9), a pharmacopoeial impurity reference standard (molecular formula C15H16FNO4, MW 293.29 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Paroxetine Impurity 56 (C15H16FNO4) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 Paroxetine Impurity 56 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 | C15H16FNO4 |
| Molecular Weight | 293.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2014 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Paroxetine Standards
- Paroxetine Impurity 48 (CAS 201855-60-9)
- Paroxetine Impurity 26 (CAS 608521-21-7)
- Paroxetine Impurity N29 (CAS 324024-00-2)
- Paroxetine Impurity 26 (CAS 324023-99-6)
- Paroxetine Impurity 70 (CAS 1396174-70-1)
- Paroxetine (CAS 61869-08-7)
- Paroxetine 3-Hydroxy Metabolite (CAS 112058-89-6)
- Paroxetine 4-Hydroxy Metabolite (CAS 112058-90-9)
Recommended Standards
- 5-{[4-(trifluoromethoxy)phenyl]amino}-1,3,4-thiadiazole-2-thiol (CAS 883041-73-4)
- Flumazenil Impurity 21 (CAS CATO-C4X-143221)
- 2-(Thiophen-2-ylsulfonyl)-4-(trifluoromethyl)pyridine (CAS 882292-13-9)
- Sulbactam Impurity 16 (CAS CATO-C4X-175616)
- Tropicamide EP Impurity B HCL (CAS CATO-C4X-21505)
- Ceftolozane impurity 1 (CAS 742057-01-8)
- Fluralaner Impurity 63 (CAS 3027861-23-7)
- 4-Chloro-N-((4-chlorobenzyl)oxy)benzenesulfonamide (CAS 303998-80-3)
- 4-Amino-6-fluorocinnoline-3-carboxamide (CAS 161373-29-1)
- Netupitant Impurity N2 HCl (CAS 290296-72-9(free base))
- Benzbromarone Impurity 13 (CAS 81324-61-0)
- 5-Benzyl-2-methyldihydro-1H-pyrrolo[3,4-c]pyridine-1,3,4,6(2H,3aH,5H)-tetraone (CAS 86818-75-9)
- (2R,3R)-2-((Benzyloxy)methyl)tetrahydrofuran-3-carbaldehyde (CAS 2861908-74-7)
- ([D?]Val?·1?)-C-Peptide (human) (CAS 1802078-41-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com