Donepezil Impurity 57 CAS 220170-73-0
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 220170-73-0 |
| Molecular Formula | C29H35NO9 |
| Molecular Weight | 541.59 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Donepezil Impurity 57 (CAS 220170-73-0), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C29H35NO9. Molecular weight: 541.59 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C29H35NO9 |
| Molecular Weight | 541.59 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2019 |
| Nitrogen Atoms | 1 |
Related Donepezil Standards
- Donepezil Impurity 29 (CAS 197010-25-6)
- 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)
Recommended Standards
- N-(1-Benzyl-3-cyano-4,5-dimethyl-1H-pyrrol-2-yl)-4-fluoro-N-(4-fluorobenzenesulfonyl)benzene-1-sulfonamide (CAS 478033-03-3)
- Fluticasone Furoate D3 (CAS 397864-44-7(unlabelled))
- 5-O-Desmethyl Donepezil Glucuronide (Mixture of Diastereomers) (CAS 220170-74-1)
- Ticagrelor Impurity 184 (R)-Mandelate (CAS 2673270-21-6)
- Oseltamivir EP Impurity E (CAS 208720-71-2)
- 1-(2-aminoethyl)cyclopropanamine;dihydrochloride (CAS 1803581-14-7)
- 1,3-Dimethoxybenzene-d10 (CAS 340257-57-0)
- 2-(Difluoromethyl)-3-hydroxy-6-methylpyridine-5-methanol (CAS 1807132-57-5)
- 2,6-Anthracenedisulfonic acid, 4,8-diamino-9,10-dihydro-1,5-dihydroxy-9,10-dioxo- (CAS 128-86-9)
- Des-Leu26-Tirzepatide (CAS CATO-CPTD788947)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com