Flurbiprofen Impurity 28 CAS CATO-C4X-144428
| CAS No. | CATO-C4X-144428 |
| Molecular Formula | C25H31FO2 |
| Molecular Weight | 382.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Flurbiprofen Impurity 28 (CAS CATO-C4X-144428), a pharmacopoeial impurity reference standard (molecular formula C25H31FO2, MW 382.51 g/mol) used for the identification and quantification of trace impurities in APIs.
Flurbiprofen Impurity 28 (C25H31FO2) contains a steroid core, a hydroxyl group, an ether linkage, fluorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
As a certified reference material (CRM), Flurbiprofen Impurity 28 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.
Physical & Chemical Properties
| Molecular Formula | C25H31FO2 |
| Molecular Weight | 382.51 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
Related Flurbiprofen Standards
- Flurbiprofen Impurity 20 (CAS CATO-C4X-144420)
- Flurbiprofen Impurity 22(Mixture of Diastereomers) (CAS CATO-C4X-144422)
- Flurbiprofen Impurity 56 (CAS CATO-C4X-144456)
- Flurbiprofen Impurity 75 (CAS CATO-C4X-144475)
- Flurbiprofen Impurity 76 (CAS CATO-C4X-144476)
- Flurbiprofen Impurity 17 (Mixture of Diastereomers) (CAS CATO-C4X-144477)
- Flurbiprofen Impurity 96 (CAS CATO-C4X-144496)
- Flurbiprofen Menthyl Ester (CAS 908559-44-4)
Recommended Standards
- Buspirone EP Impurity C (CAS 257877-45-5)
- Perfluoroheptanoyl Chloride (CAS 52447-22-0)
- 7-Chloro-2,2,3,3,4,4,5,5,6,6,7,7-dodecafluoroheptanoyl fluoride (CAS 662-63-5)
- 4-(6-Fluoro-1H-indol-3-yl)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidine (CAS 1802154-20-6)
- Cefditoren Impurity 67 (CAS CATO-C4X-135867)
- Hydantoin Impurity 7 (CAS 117751-51-6)
- Azelastine Impurity 35 (CAS CATO-C4X-139635)
- 7-ethynylspiro[3.5]nonan-7-ol (CAS 2300687-32-3)
- Tomerzol (CAS 135048-68-9)
- 2-(6-Oxabicyclo[3.1.0]hexan-2-ylidene)malononitrile (CAS 159149-14-1)
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Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com