2-Bromo-1-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)ethan-1-one

7-溴乙酰基-3,4-二氢-1,5-苯并二噁庚

Also known as: 3,4-(trimethylenedioxy)phenacyl bromide, 3,4-Trimethylenedioxyphenacyl bromide, 7-Bromoacetyl-3,4-dihydro-1,5-benzodioxepin, 2-Bromo-1-(3,4-dihydro-2H-benzo[b][1,4]dioxepin-7-yl)ethan-1-one, 2-Bromo-1-(3,4-dihydro-2H-benzo[b][1,4]dioxepin-7-yl)ethanone, 2-bromo-1-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)ethanone, 2-bromo-1-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)-1-ethanone, bromomethyl 3,4-dihydro-2H-1,5-benzodioxepin-7-yl ketone, ButtPark 48\20-100, ASINEX-REAG BAS 07686018, MFCD00218462, BB_SC-4207

2-Bromo-1-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)ethan-1-one (CAS 35970-34-4) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C11H11BrO3 and a molecular weight of 271.10700 g/mol. It is also known as 3,4-(trimethylenedioxy)phenacyl bromide, 3,4-Trimethylenedioxyphenacyl bromide and 7-Bromoacetyl-3,4-dihydro-1,5-benzodioxepin. Key properties include a melting point of 73-75°C, a boiling point of 373.8ºC at 760mmHg, a density of 1.499g/cm3 and a flash point of 179.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
35970-34-4
Jingsj CID
J-35506-9
Molecular Formula
C11H11BrO3
Chinese Name
7-溴乙酰基-3,4-二氢-1,5-苯并二噁庚
Molecular Weight
271.10700 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point73-75°C
Boiling Point373.8ºC at 760mmHg
Density1.499g/cm3
Flash Point179.8ºC

Frequently Asked Questions

What is the CAS number of 2-Bromo-1-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)ethan-1-one?

The CAS number of 2-Bromo-1-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)ethan-1-one is 35970-34-4.

What are the molecular formula and molecular weight of 2-Bromo-1-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)ethan-1-one?

2-Bromo-1-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)ethan-1-one has molecular formula C11H11BrO3 and molecular weight 271.10700 g/mol.

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

Last updated:

How to cite: Jingsj. "2-Bromo-1-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)ethan-1-one (CAS 35970-34-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35506-9 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.