Apremilast Impurity 7 CAS 2096492-41-8
| CAS No. | 2096492-41-8 |
| Molecular Formula | C22H26N2O8S |
| Molecular Weight | 478.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Apremilast Impurity 7.
Apremilast Impurity 7 (CAS 2096492-41-8) is a certified pharmaceutical impurity reference standard with the molecular formula C22H26N2O8S and a molecular weight of 478.52 g/mol.
Apremilast Impurity 7 (C22H26N2O8S) contains a flavonoid core, an amide group, a sulfone 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 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), Apremilast Impurity 7 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 | C22H26N2O8S |
| Molecular Weight | 478.52 g/mol |
| Purity | >90% |
| Storage | Store in a cool place (≤25°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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Apremilast Standards
- Apremilast Impurity 6 (CAS 1809170-71-5)
- Apremilast Impurity 115 (CAS 1384814-94-1)
- Apremilast Impurity 32 (CAS CATO-C4X-100932)
- Apremilast Impurity 44 (CAS 2096492-44-1)
- Apremilast Impurity 83 (CAS 2096492-43-0)
- Apremilast impurity 10 (CAS CATO-C4X-100910)
- Apremilast Impurity 69 (CAS CATO-C4X-100969)
- Apremilast-d8 (CAS 1258597-45-3)
Recommended Standards
- Ticagrelor Impurity 7 (CAS 220347-05-7)
- N-(Methylsulfonyl)-N-(4-((3-nitroacridin-9-yl)amino)phenyl)butyramide (CAS 61068-06-2)
- Cefmetazole Impurity 64 (CAS CATO-C4X-150764)
- N-(4-(4-Acetamidophenyl)thiazol-2-yl)-1-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-5-oxopyrrolidine-3-carboxamide (CAS 790237-66-0)
- Ilaprazole Impurity 135 (CAS 125131-90-0)
- Daunorubicin EP Impurity C (CAS 79438-97-4)
- Buserelin EP Impurity C (CAS CATO-C4X-22123)
- 2,2,2-Trifluoro-N-(4-fluorophenyl)acetamide (CAS 35980-25-7)
- 16-Nitro-2,3,5,6,8,9,11,12-octahydrobenzo[b][1,4,7,10,13]pentaoxacyclopentadecin-15-amine (CAS 77001-50-4)
- 2-Amino-N-(4-chlorophenyl)acetamide (CAS 101-88-2)
- 13-Methyloxacyclotetradecane-2,11-dione (CAS 74685-36-2)
- Ethyl 4-Piperidinecarboxylate-2,2,3,3,4,5,5,6,6-d9 (CAS 1219803-75-4)
- 2,3,6-Trimethylcyclohexan-1-one (CAS 42185-47-7)
- Des-Gln24-Tirzepatide (CAS CATO-CPTD788949)
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