Ethanone, 1-(5-methoxy-2-benzofuranyl)-

Also known as: 1-(5-Methoxy-1-benzofuran-2-yl)ethanone, 1-(5-Methoxy-2-benzofuranyl)ethanone, 1-(5-Methoxybenzofuran-2-yl)ethan-1-one, 2-Acetyl-5-methoxybenzofuran, 2-Acetyl-5-methoxybenzo[b]furan, 5-Methoxy-2-benzofuranyl methyl ketone, Acetyl-2 methoxy-5 benzofuranne

Ethanone, 1-(5-methoxy-2-benzofuranyl)- (CAS 21587-39-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H10O3 and a molecular weight of 190.19500 g/mol. Key properties include a boiling point of 300.3ºC at 760 mmHg, a density of 1.174g/cm3 and a flash point of 135.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 21587-39-3
Jingsj CID: J-1086725-1
Molecular Formula: C₁₁H₁₀O₃
Molecular Weight: 190.19500 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	300.3ºC at 760 mmHg
Density	1.174g/cm3
Flash Point	135.4ºC
Exact Mass	190.06300
PSA	39.44000
LogP	2.64400
Vapor Pressure	0.00113mmHg at 25°C
Refractive Index	1.569

Customs & Trade Information

HS Code	2932999099
Summary	2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Ethanone, 1-(5-methoxy-2-benzofuranyl)-?

The CAS number of Ethanone, 1-(5-methoxy-2-benzofuranyl)- is 21587-39-3.

What are the molecular formula and molecular weight of Ethanone, 1-(5-methoxy-2-benzofuranyl)-?

Ethanone, 1-(5-methoxy-2-benzofuranyl)- has molecular formula C11H10O3 and molecular weight 190.19500 g/mol.

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. "Ethanone, 1-(5-methoxy-2-benzofuranyl)- (CAS 21587-39-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1086725-1 (accessed 2026-11-09).

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