Etofenamate EP Impurity E CAS CATO-C4X-26038
| CAS No. | CATO-C4X-26038 |
| Molecular Formula | C22H26F3NO4 |
| Molecular Weight | 425.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Etofenamate EP Impurity E (CAS CATO-C4X-26038, C22H26F3NO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C22H26F3NO4, Etofenamate EP Impurity E contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 425.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), Etofenamate EP Impurity E 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 | C22H26F3NO4 |
| Molecular Weight | 425.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Etofenamate Standards
- Etofenamate Impurity 7 (CAS CATO-C4X-26037)
- Etofenamate Impurity 2 (CAS CATO-C4X-26032)
- Etofenamate (CAS 30544-47-9)
- Etofenamate Impurity 10 (CAS CATO-C4X-260310)
- Etofenamate Impurity 9 (CAS CATO-C4X-26039)
- Etofenamate EP Impurity G (CAS 32508-98-8)
- Etofenamate Impurity N9 (CAS 68749-59-7)
- Etofenamate Impurity 11 (CAS CATO-C4X-260311)
Recommended Standards
- N-Benzyl-1-(furan-2-ylmethyl)-2-imino-5-oxo-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide (CAS 510760-75-5)
- Coelenterazine f (CAS 123437-16-1)
- N'-(1-([1,1'-Biphenyl]-4-yl)ethylidene)-5-(3-nitrophenyl)-1H-pyrazole-3-carbohydrazide (CAS 302918-57-6)
- 1-Benzyl-6,7-difluoro-3-(m-tolylsulfonyl)quinolin-4(1H)-one (CAS 1326942-08-8)
- Hydroxychloroquine EP Impurity F (CAS 6281-58-9)
- Sarpogrelate Impurity 9 (CAS CATO-C4X-29139)
- Creatine Phosphate Impurity 15 (CAS CATO-C4X-120915)
- 1-Benzyl-4-(4-tetrahydropyranyl)piperazine (CAS 1033594-04-5)
- 3-Methyltetrahydrothiophene-3-carbaldehyde 1,1-dioxide (CAS 1780259-87-1)
- Tenapanor impurity 2 (CAS 2200552-25-4)
- 5-bromo-3-{[3-(propan-2-yl)-1,2,4-oxadiazol-5-yl]methyl}-3,4-dihydropyrimidin-4-one (CAS 1510711-65-5)
- 2,2'-(((2R,3R,4S,5R)-2,3,5-trihydroxy-6-oxohexane-1,4-diyl)bis(oxy))diacetic acid (CAS 122569-71-5)
- N-{3-[(2-Bromoacetyl)amino]phenyl}benzamide (CAS 886014-61-5)
- Semaglutide impurity 57 (CAS 2773558-06-6)
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