Donepezil Impurity 29 CAS 197010-25-6
| CAS No. | 197010-25-6 |
| Molecular Formula | C24H29NO5 |
| Molecular Weight | 411.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Donepezil Impurity 29 (C24H29NO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. 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).
CATO supplies Donepezil Impurity 29 (CAS 197010-25-6), a pharmacopoeial impurity reference standard (molecular formula C24H29NO5, MW 411.49 g/mol) used for the identification and quantification of trace impurities in APIs.
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), Donepezil Impurity 29 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 | C24H29NO5 |
| Molecular Weight | 411.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2013 |
| Nitrogen Atoms | 1 |
Related Donepezil Standards
- Donepezil Impurity 31 (CAS 2097683-67-3)
- Donepezil EP impurity C (CAS 2452407-76-8)
- Donepezil Impurity 7 (CAS 120013-84-5)
- Donepezil Impurity 51 (CAS CATO-C4X-103951)
- Donepezil Impurity 53 (CAS 149874-81-7)
- Donepezil Impurity 74 (CAS CATO-C4X-103974)
- Donepezil Impurity 15 (CAS 1023500-88-0)
- Donepezil Impurity 40 (CAS 923571-16-8)
Recommended Standards
- O-Isobutyryl Naltrexone (1.0mg/ml in Acetonitrile) (CAS 861238-38-2)
- Rosuvastatin Impurity 168 (CAS CATO-C4X-1169168)
- N-Fmoc-N-methyl-O-(3-methylbutyl)-L-Serine (CAS 2255321-12-9)
- Nitroso Perindopril EP impurity E (CAS CATO-C4X-125247)
- Avanafil Impurity 146 (CAS CATO-C4X-1118146)
- Metoclopramide EP Impurity H (CAS 50-86-2)
- Iohexol EP Impurity F (CAS 1215856-35-1)
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- ethyl 2-hydroxy-2-methylbutanoate (CAS 77-70-3)
- 2-(2-formylfuran-3-yl)acetic acid (CAS 1824583-58-5)
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- (Z)-1-(Furan-3-yl)-4,8-dimethylnona-4,7-diene-1,6-dione (CAS 92448-65-2)
- 1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one (CAS 2898-08-0)
- Semaglutide Sodium Salt (CAS CATO-C4X-222620)
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