FCN437 Impurity 4 CAS CATO-C4X-33244
| CAS No. | CATO-C4X-33244 |
| Molecular Formula | C14H19NO4S |
| Molecular Weight | 297.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures FCN437 Impurity 4 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.
FCN437 Impurity 4 (CAS CATO-C4X-33244) is a certified pharmaceutical impurity reference standard with the molecular formula C14H19NO4S and a molecular weight of 297.37 g/mol.
The molecular framework of FCN437 Impurity 4 (C14H19NO4S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C14H19NO4S |
| Molecular Weight | 297.37 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- Leucogen Impurity 6 (CAS CATO-C4X-28896)
- FCN437 Impurity 5 (CAS CATO-C4X-33245)
- Cobicistat impurity 7 (CAS 1004316-93-1)
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- Afatinib Impurity 90 (CAS CATO-C4X-100690)
- Ceftazidime Impurity 102 (CAS CATO-C4X-1212102)
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- Cyclohexyl 2,4-dichlorophenyl ketone (CAS 898769-45-4)
- Liraglutide (14-31)TFA Salt (CAS CATO-C4X-19927)
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