Phenytoin EP Impurity E CAS 6802-95-5
| CAS No. | 6802-95-5 |
| Molecular Formula | C15H14N2O3 |
| Molecular Weight | 270.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 270.28 g/mol gives Phenytoin EP Impurity E distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Phenytoin EP Impurity E (CAS 6802-95-5) is a certified pharmaceutical impurity reference standard with the molecular formula C15H14N2O3 and a molecular weight of 270.28 g/mol.
The molecular framework of Phenytoin EP Impurity E (C15H14N2O3) is characterized by a nitrogen-containing heterocyclic scaffold, an amide 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
CATO manufactures Phenytoin EP Impurity E 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 | C15H14N2O3 |
| Molecular Weight | 270.28 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
Related Phenytoin Standards
- Phenytoin Impurity 1 (CAS 5157-13-1)
- Phenytoin Impurity 15 (CAS CATO-C4X-186415)
- Phenytoin Impurity 2 (CAS 21083-47-6)
- Phenytoin Impurity N15 (CAS 2784-27-2)
- Phenytoin EP Impurity F (CAS 51169-17-6)
- Phenytoin-d10 (CAS 65854-97-9)
- Phenytoin Impurity 22 (CAS CATO-C4X-186422)
- Phenytoin Impurity 21 (CAS CATO-C4X-186421)
Recommended Standards
- Suvorexant Impurity 14 (CAS 2941-79-9)
- Doxofylline-d4 (CAS 1346599-13-0)
- Fenbufen EP Impurity D (CAS CATO-C4X-19393)
- Ketoprofen Impurity 79 (CAS 61467-02-5)
- Dutaverine Impurity 31 (CAS CATO-C4X-243531)
- Acetazolamide EP Impurity G (CAS 2349-67-9)
- Esmolol Impurity 73 (CAS CATO-C4X-189173)
- 2-(3,5-Dimethyl-1H-pyrazol-1-yl)-6-propoxybenzo[d]thiazole (CAS 1706463-86-6)
- 3-Cyano-4-methylbenzenesulfonyl chloride (CAS 1261582-58-4)
- (2e)-3-(Dimethylamino)-2-methanesulfonylprop-2-enenitrile (CAS 858135-91-8)
- 2-(4-Fluorophenyl)-7-methylimidazo[1,2-a]pyridine-3-carbaldehyde (CAS 727652-06-4)
- Volatile Mix 35 (CAS CATO-MVOC109135-ME)
- 7-Bromopyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 1357352-02-3)
- [2-31]-Semaglutide C (x TFA Salt) (CAS CATO-C4X-2226118)
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