Donepezil Intermediate 21 CAS 6443-72-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 6443-72-7 |
| Molecular Formula | C11H11NO2 |
| Molecular Weight | 189.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Donepezil Intermediate 21 (CAS 6443-72-7), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C11H11NO2. Molecular weight: 189.21 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C11H11NO2 |
| Molecular Weight | 189.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related Donepezil Standards
- Donepezil EP impurity B (CAS 2107-69-9)
- Donepezil Impurity 17 (CAS 127399-78-4)
- Donepezil Impurity 18 (CAS 90843-62-2)
- Donepezil Aldehyde Impurity (CAS 22065-85-6)
- Donepezil Impurity 16 (CAS 36517-91-6)
- Donepezil Impurity 14 (CAS 148517-82-2)
- Donepezil Impurity 60 (CAS 7216-42-4)
- Donepezil Impurity 44 (CAS 1026443-48-0)
Recommended Standards
- 3-Amino-5-(2-methoxyphenyl)-1H-pyrazole 5-(2-methoxyphenyl)-1H-pyrazol-3-amine 909861-26-3 A19301 (CAS 909861-26-3)
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- (E)-N,N-Dimethyl-N'-{7-[1-(3-methylphenoxy)ethyl]-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl}methanimidamide (CAS 477865-39-7)
- 5-Chloropyridine-3,4-dicarboxylic acid (CAS 101420-62-6)
- tert-Butyl 4-(cyanomethyl)-3-oxopiperazine-1-carboxylate (CAS 234108-59-9)
- 94-67-7 Salicylaldoxime Benzaldehyde, 2-hydroxy-, oxime Salicylaldehyde oxime 1-08-00-00520 (Beilstein Handbook Reference) AI3-10566 BRN 1859881 EINECS 202-353-8 o-Hydroxybenzaldehyde oxime 2-Hydroxybenzaldehyde oxime o-Hydroxybenzaldoxime 2-Hydroxybenzaldoxime (2-Hydroxyphenylmethylene)azanol NSC 5057 Saldox Salicylaldehydoxime (CAS 94-67-7)
- 8-(4-Fluorophenyl)-2-(trifluoromethyl)-5,6,7,8-tetrahydroimidazo[1,2-a]pyrazine (CAS 611240-72-3)
- 1-((3-Bromo-4-methylphenyl)sulfonyl)-4-methylpiperidine (CAS 1704081-97-9)
- Semaglutide impurity 84 (CAS CATO-C4X-222684)
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