Entacapone EP Impurity E CAS 7659-29-2
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 7659-29-2 |
| Molecular Formula | C6H4N2O6 |
| Molecular Weight | 200.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Entacapone EP Impurity E (CAS 7659-29-2) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C6H4N2O6. Molecular weight: 200.11 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C6H4N2O6 |
| Molecular Weight | 200.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Nitrogen Atoms | 2 |
Related Entacapone Standards
- Entacapone Impurity 25 (CAS 6635-20-7)
- Entacapone Impurity 28 (CAS 2450-26-2)
- Entacapone Impurity 29 (CAS 2454-72-0)
- Entacapone Impurity 31 (CAS 80547-69-9)
- Entacapone Impurity 32 (CAS CATO-C4X-162932)
- Entacapone Impurity 33 (CAS 144683-49-8)
- Entacapone Impurity 34 (CAS 144683-48-7)
- Entacapone Impurity N5 (CAS 2426-86-0)
Recommended Standards
- Oxetan-3-yl (2,2,2-trifluoroethyl) carbonate (CAS 2138427-54-8)
- Acipimox impurity 22 (CAS CATO-C4X-186622)
- 6-Hydroxy-5-nitro-4-oxo-1,4-dihydropyridine-3-carboxylic acid (CAS 685542-71-6)
- Vericiguat Impurity 100 (CAS 1011527-86-8)
- SM7280A Impurity 3 (CAS CATO-C4X-32963)
- 2-[2-[(tert-Butoxycarbonyl)amino]ethoxy]ethanol (CAS 139115-91-6)
- (R)-tert-Butyl 2-((R)-2-amino-3-methoxy-3-oxopropyl)pyrrolidine-1-carboxylate (CAS 2756662-42-5)
- 9-(3-Bromophenyl)-10-(naphthalen-2-yl)anthracene (CAS 943861-20-9)
- 3-Amino-5-bromo-2-fluorobenzoic acid (CAS 1339056-03-9)
- Tirzepatide Impurity 19 X TFA Salt (CAS CATO-C4X-324019)
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 13829788188 / jacky.chen@cato-chem.com