Diclofenac Impurity 41 CAS 131023-45-5
| CAS No. | 131023-45-5 |
| Molecular Formula | C14H11NO3 |
| Molecular Weight | 241.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Diclofenac Impurity 41 (CAS 131023-45-5) is a certified pharmaceutical impurity reference standard with the molecular formula C14H11NO3 and a molecular weight of 241.24 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Diclofenac Impurity 41 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 241.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), Diclofenac Impurity 41 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 | C14H11NO3 |
| Molecular Weight | 241.24 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 1 |
Related Diclofenac Standards
- Diclofenac impurity 6 (CAS 860541-55-5)
- Diclofenac Related Compound 14 (CAS 3644-56-2)
- Diclofenac Impurity 21 (CAS 105836-68-8)
- Diclofenac Sodium Impurity 33 (CAS 58373-59-4)
- Diclofenac sodium Impurity 38 (CAS 15307-93-4)
- Diclofenac impurity 4 (CAS 1928-49-0)
- Diclofenac impurity 10 (CAS 172494-87-0)
- Diclofenac Impurity 17 (CAS 43171-49-9)
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