1,2-epoxy-5-cyclooctene

1,2-环氧基-5-环辛烯

Also known as: 9-Oxabicyclo[6.1.0]non-4-ene, 1,5-cyclooctadiene monoepoxide, 1,5-cyclooctadiene monoxide, 5,6-epoxy-1-cyclooctene, NSC 61254, cis-1,2-epoxy-5-cyclooctene, meso-cycloocta-1,5-diene oxide, Cycloocta-1,5-diene epoxide, 9-OXABICYCLO[6.1.0]NON-4-ENE

1,2-epoxy-5-cyclooctene (CAS 637-90-1) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C8H12O and a molecular weight of 124.18000 g/mol. It is also known as 9-Oxabicyclo[6.1.0]non-4-ene, 1,5-cyclooctadiene monoepoxide and 1,5-cyclooctadiene monoxide. Key properties include a boiling point of 195ºC(lit.), a density of 1.013 g/mL at 25ºC(lit.) and a flash point of 158 °F. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
637-90-1
Jingsj CID
J-26960-3
Molecular Formula
C8H12O
Chinese Name
1,2-环氧基-5-环辛烯
Molecular Weight
124.18000 g/mol
Category
Ethers
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point195ºC(lit.)
Density1.013 g/mL at 25ºC(lit.)
Flash Point158 °F

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 1,2-epoxy-5-cyclooctene?

The CAS number of 1,2-epoxy-5-cyclooctene is 637-90-1.

What are the molecular formula and molecular weight of 1,2-epoxy-5-cyclooctene?

1,2-epoxy-5-cyclooctene has molecular formula C8H12O and molecular weight 124.18000 g/mol.

Is 1,2-epoxy-5-cyclooctene hazardous?

1,2-epoxy-5-cyclooctene has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "1,2-epoxy-5-cyclooctene (CAS 637-90-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26960-3 (accessed 2026-10-23).

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