Entacapone Impurity 33 CAS 144683-49-8
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 144683-49-8 |
| Molecular Formula | C8H7NO5 |
| Molecular Weight | 197.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Entacapone Impurity 33 (CAS 144683-49-8) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C8H7NO5. Molecular weight: 197.14 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C8H7NO5 |
| Molecular Weight | 197.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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.) | 1998 |
| Nitrogen Atoms | 1 |
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 34 (CAS 144683-48-7)
- Entacapone Impurity N5 (CAS 2426-86-0)
- Entacapone EP Impurity E (CAS 7659-29-2)
Recommended Standards
- Gefitinib Impurity N18 (CAS 58749-47-6)
- 2-Hydroxy-5-nitro-m-anisaldehyde (CAS 17028-61-4)
- 2-hydroxy-3-methoxy-4-nitrobenzaldehyde (CAS 20041-61-6)
- Phenytoin Impurity 23 (CAS 14704-09-7)
- Flurbiprofen Impurity 118 (CAS CATO-C4X-1444118)
- N-4-(1-Pyrene)butyroylglycine (CAS 228414-55-9)
- (S)-3-((tert-Butoxycarbonyl)amino)-3-(2,5-dimethoxyphenyl)propanoic acid (CAS 1228542-74-2)
- 6-Azaspiro[4.5]Decan-9-one 2,2,2-trifluoroacetate (CAS 1334146-61-0)
- 3-Methyl-1-(4-phenyl-1,3-thiazol-2-yl)-1h-pyrazol-5-ol (CAS 117480-98-5)
- Semaglutide Impurity 167 (CAS CATO-C4X-2226167)
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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