5-Bromo-2-methyl-2-pentene

5-溴-2-甲基-2-戊烯

Also known as: 2-Pentene, 5-bromo-2-methyl-, 5-Bromo-2-methylpent-2-ene, 1-bromo-4-methyl-3-pentene, 1-bromo-4-methylpent-3-ene, 4-methyl-3-pentenyl bromide, 4-methylpent-3-enyl bromide, Homoprenyl bromide, Prenylmethyl bromide, NSC 244464, MFCD00009887

5-Bromo-2-methyl-2-pentene (CAS 2270-59-9) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H11Br and a molecular weight of 163.055 g/mol. It is also known as 2-Pentene, 5-bromo-2-methyl-, 5-Bromo-2-methylpent-2-ene and 1-bromo-4-methyl-3-pentene. Key properties include a melting point of -102.35°C (estimate), a boiling point of 152.6±9.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 22.8±0.0 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2270-59-9
Jingsj CID
J-1359525-0
Molecular Formula
C6H11Br
Chinese Name
5-溴-2-甲基-2-戊烯
Molecular Weight
163.055 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point-102.35°C (estimate)
Boiling Point152.6±9.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point22.8±0.0 °C

GHS Safety & Compliance

Flammable / IrritantSignal word: Danger

Frequently Asked Questions

What is the CAS number of 5-Bromo-2-methyl-2-pentene?

The CAS number of 5-Bromo-2-methyl-2-pentene is 2270-59-9.

What are the molecular formula and molecular weight of 5-Bromo-2-methyl-2-pentene?

5-Bromo-2-methyl-2-pentene has molecular formula C6H11Br and molecular weight 163.055 g/mol.

Is 5-Bromo-2-methyl-2-pentene hazardous?

5-Bromo-2-methyl-2-pentene has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "5-Bromo-2-methyl-2-pentene (CAS 2270-59-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1359525-0 (accessed 2026-10-22).

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