Felbinac Trometamol Impurity 4 CAS CATO-C4X-33684
| CAS No. | CATO-C4X-33684 |
| Molecular Formula | C18H21NO2 |
| Molecular Weight | 283.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Felbinac Trometamol Impurity 4 is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Felbinac Trometamol Impurity 4 (CAS CATO-C4X-33684), a pharmacopoeial impurity reference standard (molecular formula C18H21NO2, MW 283.36 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Felbinac Trometamol Impurity 4 (C18H21NO2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Felbinac Trometamol 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.
Physical & Chemical Properties
| Molecular Formula | C18H21NO2 |
| Molecular Weight | 283.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Felbinac Standards
- Felbinac impurity 4 (CAS 1286423-88-8)
- Felbinac Trometamol Impurity 2 (CAS CATO-C4X-33682)
- Felbinac Impurity 4 (CAS 4575-44-4)
- Felbinac Impurity 3 (CAS 26140-60-3)
- Felbinac Impurity 2 (CAS 5728-52-9)
- Felbinac EP Impurity A (CAS 92-91-1)
- Felbinac Trometamol Impurity 3 (CAS CATO-C4X-33683)
- Felbinac Trometamol Impurity 5 (CAS CATO-C4X-33685)
Recommended Standards
- Ebastine Impurity 25 (CAS CATO-C4X-202925)
- N-Ethyl-4-(piperidin-3-yl)-5-(pyridin-4-yl)pyrimidin-2-amine (CAS 1001754-38-6)
- Bumetanide Impurity 78 (CAS CATO-C4X-198679)
- 4-Amino-N-[4-(diethylamino)phenyl]benzamide (CAS 101578-04-5)
- Pethidine EP Impurity A HCl (CAS 10272-50-1)
- Atogepant Impurity 37 (CAS CATO-C4X-328537)
- Bumetanide Photodegradant Impurity 17 (CAS CATO-C4X-198617)
- n-[5-(2-chloroacetyl)-2-hydroxyphenyl]acetamide (CAS 145736-72-7)
- 1-ethoxy-1,1,2,2,2-pentafluoroethane 22052-81-9 Ethyl pentafluoroethyl ether (CAS 22052-81-9)
- Ethyl 2-(pyridin-3-yl)thiazole-4-carboxylate (CAS 39067-28-2)
- 1,4,8-Trihydroxy-2-(3-oxopentyl)anthracene-9,10-dione (CAS 75963-98-3)
- tert-Butyl 3-(((2,4-dichloropyrimidin-5-yl)methyl)amino)piperidine-1-carboxylate (CAS 1420867-40-8)
- N,N-diethyl-2,3-dimethylbenzamide (CAS 57806-76-5)
- Semaglutide impurity 78 (CAS CATO-C4X-222678)
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