1-cyclopentylprop-2-yn-1-one

1-环戊基-2-丙炔-1-酮

Also known as: 1-cyclopentyl-2-propynone, cyclopentyl ethynyl ketone, 2-propyn-1-one, 1-cyclopentyl-, 1-Cyclopentyl-prop-2-in-1-on

1-cyclopentylprop-2-yn-1-one (CAS 70639-95-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H10O and a molecular weight of 122.16400 g/mol. It is also known as 1-cyclopentyl-2-propynone, cyclopentyl ethynyl ketone and 2-propyn-1-one, 1-cyclopentyl-. Key properties include a boiling point of 191.6ºC at 760 mmHg, a density of 1.015g/cm3 and a flash point of 67.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
70639-95-1
Jingsj CID
J-1357965-6
Molecular Formula
C8H10O
Chinese Name
1-环戊基-2-丙炔-1-酮
Molecular Weight
122.16400 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point191.6ºC at 760 mmHg
Density1.015g/cm3
Flash Point67.1ºC

Frequently Asked Questions

What is the CAS number of 1-cyclopentylprop-2-yn-1-one?

The CAS number of 1-cyclopentylprop-2-yn-1-one is 70639-95-1.

What are the molecular formula and molecular weight of 1-cyclopentylprop-2-yn-1-one?

1-cyclopentylprop-2-yn-1-one has molecular formula C8H10O and molecular weight 122.16400 g/mol.

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

Last updated:

How to cite: Jingsj. "1-cyclopentylprop-2-yn-1-one (CAS 70639-95-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1357965-6 (accessed 2026-10-25).

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