2-((1-Benzylpiperidin-4-yl)methylene)-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one

Also known as: Dehydro Donepezil, Donepezil USP RC A, Donepezil Impurity A, 1-Benzyl-4-[(5,6-dimethoxy-1-oxoindan-2-ylidene)methyl]piperidine, (2Z)-2-[(1-Benzylpiperidin-4-yl)methylidene]-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one, 2-[(1-Benzyl-4-piperidinyl)methylene]-5,6-dimethoxy-1-indanone, 2,3-Dihydro-5,6-dimethoxy-2-[[1-(phenylmethyl)-4-piperidinyl]methylene]-1H-inden-1-one, Donepezil Impurity 17

2-((1-Benzylpiperidin-4-yl)methylene)-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one (CAS 120014-07-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C24H27NO3 and a molecular weight of 377.476 g/mol. Key properties include a melting point of 176-178ºC, a boiling point of 542.8±50.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 282.1±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 120014-07-5
Jingsj CID: J-1112566-9
Molecular Formula: C₂₄H₂₇NO₃
Molecular Weight: 377.476 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	176-178ºC
Boiling Point	542.8±50.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	282.1±30.1 °C
Exact Mass	377.199097
PSA	38.77000
LogP	4.08
Vapor Pressure	0.0±1.4 mmHg at 25°C
Refractive Index	1.636

Frequently Asked Questions

What is the CAS number of 2-((1-Benzylpiperidin-4-yl)methylene)-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one?

The CAS number of 2-((1-Benzylpiperidin-4-yl)methylene)-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one is 120014-07-5.

What are the molecular formula and molecular weight of 2-((1-Benzylpiperidin-4-yl)methylene)-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one?

2-((1-Benzylpiperidin-4-yl)methylene)-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one has molecular formula C24H27NO3 and molecular weight 377.476 g/mol.

What are the upstream and downstream products of 2-((1-Benzylpiperidin-4-yl)methylene)-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one?

For 2-((1-Benzylpiperidin-4-yl)methylene)-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one, Downstream Products: Donepezil hydrochloride monohydrate, 5,6-Dimethoxy-2-(piperidin-4-ylmethyl)-2,3-dihydro-1H-inden-1-one.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "2-((1-Benzylpiperidin-4-yl)methylene)-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one (CAS 120014-07-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1112566-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.