Entacapone EP Impurity D CAS 857629-79-9
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 857629-79-9 |
| Molecular Formula | C16H19N3O5 |
| Molecular Weight | 333.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Entacapone EP Impurity D (CAS 857629-79-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C16H19N3O5. Molecular weight: 333.34 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C16H19N3O5 |
| Molecular Weight | 333.34 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Related Entacapone Standards
- Entacapone impurity 20 (CAS CATO-C4X-162920)
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- Entacapone JP Impurity C (CAS CATO-C4X-162937)
- Entacapone Impurity 10 (CAS CATO-C4X-162910)
- Entacapone Impurity 11 (CAS CATO-C4X-162911)
- Entacapone impurity 50 (CAS CATO-C4X-162950)
- Entacapone Impurity 62 (CAS CATO-C4X-162962)
- Entacapone Impurity 21 (CAS 158693-04-0)
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