Entacapone EP Impurity C(Mixtures of tautomers) CAS 116313-85-0
| CAS No. | 116313-85-0 |
| Molecular Formula | C7H5NO5 |
| Molecular Weight | 183.12 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Entacapone EP Impurity C(Mixtures of tautomers) is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Entacapone EP Impurity C(Mixtures of tautomers) (CAS 116313-85-0, C7H5NO5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Entacapone EP Impurity C(Mixtures of tautomers) (C7H5NO5) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 Entacapone EP Impurity C(Mixtures of tautomers) 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 | C7H5NO5 |
| Molecular Weight | 183.12 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.) | 1990 |
| Nitrogen Atoms | 1 |
Related Entacapone Standards
- Entacapone impurity 38 (CAS CATO-C4X-162938)
- 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)
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- D-Phe22-Tirzepatide (CAS CATO-CPTD788912)
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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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com