Felbinac Trometamol Impurity 2 CAS CATO-C4X-33682
| CAS No. | CATO-C4X-33682 |
| Molecular Formula | C18H21NO4 |
| Molecular Weight | 315.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Felbinac Trometamol Impurity 2 is closely related to a flavonoid 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 2 (CAS CATO-C4X-33682), a pharmacopoeial impurity reference standard (molecular formula C18H21NO4, MW 315.36 g/mol) used for the identification and quantification of trace impurities in APIs.
Felbinac Trometamol Impurity 2 (C18H21NO4) contains a flavonoid core, 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).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C18H21NO4 |
| Molecular Weight | 315.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Felbinac Standards
- Felbinac Trometamol Impurity 4 (CAS CATO-C4X-33684)
- Felbinac impurity 4 (CAS 1286423-88-8)
- 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
- Roxadustat Impurity 8 (CAS CATO-C4X-22138)
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- Cephalotaxine (CAS 24316-19-6)
- Brivaracetam Impurity 43 (CAS CATO-C4X-200743)
- Tegoprazan Impurity N18 (CAS 1640981-16-3)
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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