ChemicalBook >> CAS DataBase List >>5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one
5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one
- CAS No.
- 4803-74-1
- Chemical Name:
- 5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one
- Synonyms
- Donepezil Impurity D;Donepezil Impurity 23;Donepezil Impurity 48;Letimovir intermediate;Doneprzil Pyridine Dehydro Imp;Donepezil pyridine dehydro Imp;Donepezil Pyridine Dehydro Impurity;5,6-Dimethoxy-2-[(4-pyridyl)methyle;5,6-Dimethoxy-2- (4-pyridyl) methyl-1-indenone;5, 6-dimethoxy-2 -(4-pyridyl) methylene-1-indone
- CBNumber:
- CB0842563
- Molecular Formula:
- C17H15NO3
- Molecular Weight:
- 281.31
- MDL Number:
- MFCD08458868
- MOL File:
- 4803-74-1.mol
Last updated:2026-07-16 18:07:46
| Melting point | 210-211°C |
|---|---|
| Boiling point | 499.9±45.0 °C(Predicted) |
| Density | 1.255 |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | Chloroform (Slightly), Methanol (Slightly, Heated) |
| form | Solid |
| pka | 5.10±0.10(Predicted) |
| color | Yellow |
| CAS DataBase Reference | 4803-74-1(CAS DataBase Reference) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P264-P271-P280-P302+P352-P304+P340+P312-P305+P351+P338-P332+P313-P337+P313-P403+P233-P405-P501 |
5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one price More Price(47)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| TRC | TRC-D460720-25MG | 5,6-Dimethoxy-2-(4-pyridylmethylene)-1-indanone (Donepezil Impurity) | 4803-74-1 | 25mg | $96 | 2026-06-03 | Buy |
| TRC | TRC-D460720-2.5G | 5,6-Dimethoxy-2-(4-pyridylmethylene)-1-indanone (Donepezil Impurity) | 4803-74-1 | 2.5g | $734 | 2026-06-03 | Buy |
| TRC | TRC-D460720-100MG | 5,6-Dimethoxy-2-(4-pyridylmethylene)-1-indanone (Donepezil Impurity) | 4803-74-1 | 100mg | $314 | 2026-06-03 | Buy |
| Biosynth | ID22170 | 5,6-Dimethoxy-2-(4-pyridylmethylene)-1-indanone | 4803-74-1 | 5g | $150 | 2026-06-04 | Buy |
| Biosynth | ID22170 | 5,6-Dimethoxy-2-(4-pyridylmethylene)-1-indanone | 4803-74-1 | 10g | $207.7 | 2026-06-04 | Buy |
5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one Chemical Properties,Uses,Production
Chemical Properties
Yellow Solid
Uses
An impurity of Donepezil.
References
[1] Patent: WO2012/131540, 2012, A1. Location in patent: Page/Page column 16
[2] Patent: US2004/143121, 2004, A1. Location in patent: Page 3
[3] Patent: WO2004/82685, 2004, A1. Location in patent: Page/Page column 9
[4] European Journal of Medicinal Chemistry, 2011, vol. 46, # 11, p. 5694 - 5697
[5] Bioorganic and Medicinal Chemistry Letters, 2012, vol. 22, # 23, p. 7029 - 7035,7
5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one Preparation Products And Raw materials
Raw materials
Preparation Products
Global( 206)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| JinYan Chemicals(ShangHai) Co.,Ltd. | 13817811078 | sales@jingyan-chemical.com | China | 9963 | 60 |
| Jia Xing Isenchem Co.,Ltd | 0573-85285100 18627885956 | isenchem@163.com | China | 9389 | 66 |
| Chemsky（shanghai）International Co.,Ltd. | 021-50135380 | shchemsky@sina.com | China | 32273 | 50 |
| Beijing Isomersyn Technology CO;LTD | 010-82954736 13391601435 | sales@isomersyn.com | China | 3294 | 57 |
| Daicel Chiral Technologies (China)CO.,LTD | 021-50460086-9 15921403865 | han_yajun@dctc.daicel.com | China | 7909 | 65 |
| Shanghai Ennopharm Co., Ltd. | +86 (21) 6435-5022 | China | 4263 | 65 | |
| Jinan Chenghui Shuangda biological Co., LTD | 053158897070 15550412551 | market@jnchsd.com | China | 224 | 62 |
| Tianjin heowns Biochemical Technology Co., Ltd. | 400 638 7771 | sales@heowns.com | China | 14412 | 57 |
| The future of Shanghai Industrial Co., Ltd. | 021-61552785 | sales@shshiji.com | China | 9531 | 55 |
View Lastest Price from 5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-08-20 | 5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one
4803-74-1
|
$1.10 | 1g | 99.00% | 100 Tons Min | Dideu Industries Group Limited | |
 |
2026-07-16 | 5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one
4803-74-1
|
1kg | 98% | 1000kgs | Shaanxi Dideu New Materials Co. Ltd | ||
 |
2025-06-20 | 5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one
4803-74-1
|
$100.00 | 1kg | 0.99 | 20 tons | Hebei Yanxi Chemical Co., Ltd. |
-
- 5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one
4803-74-1
- $1.10
- 99.00%
- Dideu Industries Group Limited
-
- 5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one
4803-74-1
- $0.00
- 98%
- Shaanxi Dideu New Materials Co. Ltd
-
- 5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one
4803-74-1
- $100.00
- 0.99
- Hebei Yanxi Chemical Co., Ltd.
4803-74-1(5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one)Related Search:
2,3-dihydro-5,6-dimethoxy-2-(4-pyridinylmethylene)-1h-inden-1-one
5,6-DIMETHOXY-2-(PYRIDINE-4-YL)METHYLENE-INDAN-1-ONE
4-[(5,6-Dimethoxy-1-Indanone) -2-Methyl] Pyridine
1-Indanone,5,6-dimethoxy-2-(4-pyridylmethylene)- (7CI,8CI)
Donepezil pyridine dehydro Imp
Doneprzil Pyridine Dehydro Imp
5,6-dimethoxyl-2-(piperidin-4-y)methylene-indan-1-one
5,6-DIMETHOXY-2-(4-PYRIDYLMETHYLENE)-1-INDANONE,98.0+%
5,6-Dimethoxy-2-(4-pyridylmethylene)-1-indanone (Donepezil Impurity)
5,6-DiMethoxy-2-(pyridin-4-ylMethylene)-2,3-dihydro-1H-inden-1-one
1H-Inden-1-one,2,3-dihydro-5,6-diMethoxy-2-(4-pyridinylMethylene)-
5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one
2,3-Dihydro-5,6-dimethoxy-2-(4-pyridinylmethylene)-1H-inden-1-one
(E)-5,6-dimethoxy-2-(pyridin-4-ylmethylene)-2,3-dihydro-1H-inden-1-one
Donepezil Impurity D
Donepezil Impurity 23
Donepezil Pyridine Dehydro Impurity
5,6-Dimethoxy-2-[(4-pyridyl)methyle
5,6-Dimethoxy-2-(pyridine-4-yl)methylene-indan-1-one ISO 9001：2015 REACH
Letimovir intermediate
Donepezil Impurity 48
5,6-Dimethoxy-2-[(4-pyridyl)methylene]indan-1-one
5,6-Dimethoxy-2- (4-pyridyl) methyl-1-indenone
5,6-Dimethoxy-2(pyridine-4-yl-methelene-indane-1-one
(E)-2,3-dihydro-5,6-dimethoxy-2-((pyridin-4-yl)methylene)inden-1-one
5, 6-dimethoxy-2 -(4-pyridyl) methylene-1-indone
5,6-dimethoxy-2-(pyridin-4-ylmethylene)-2,3-dihydroinden-1-one
(E)-5,6-Dimethoxy-2-pyridin-4-ylmethylene-indan-1-one
5,6-Dimethoxy-2-(pyridin-4-ylmethylene)-2,3-dihydro-1H-inden-1-one (Donepezil Impurity)
5,6-Dimethoxy-2-(4-pyridinyl)methylene-1-indanone
4803-74-1
Aromatics Compounds
Aromatics
Heterocycles
Impurities
Intermediates & Fine Chemicals
Pharmaceuticals
4803-74-1
