Valproate Impurity 85 CAS CATO-C4X-116685
| CAS No. | CATO-C4X-116685 |
| Molecular Formula | C14H22O4 |
| Molecular Weight | 254.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Valproate Impurity 85 is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Valproate Impurity 85 (CAS CATO-C4X-116685), a pharmacopoeial impurity reference standard (molecular formula C14H22O4, MW 254.32 g/mol) used for the identification and quantification of trace impurities in APIs.
Valproate Impurity 85 (C14H22O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), Valproate Impurity 85 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C14H22O4 |
| Molecular Weight | 254.32 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Valproate Standards
- Valproate impurity 89 (CAS CATO-C4X-116689)
- Sodium Valproate Impurity 41 (CAS CATO-C4X-116641)
- Sodium Valproate Impurity 23 (CAS 4443-26-9)
- Valproate Impurity 37 (CAS 62391-98-4)
- Valproate Impurity 47 (CAS 6065-63-0)
- Valproate Impurity 76 (CAS 502850-33-1)
- Valproate Impurity 98 (CAS CATO-C4X-116698)
- Sodium Valproate Impurity 40 (CAS CATO-C4X-116640)
Recommended Standards
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- Fluvastatin EP Impurity C(Sodium Salt) (CAS 2451176-31-9 (free acid))
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