4-Cyclopentyl-2-pyrrolidinone

4-环戊基-2-吡咯烷酮

Also known as: 4-Cyclopentylpyrrolidin-2-one, 2-Pyrrolidinone,4-cyclopentyl-, 2-Pyrrolidinone,4-cyclopentyl-(9CI)

4-Cyclopentyl-2-pyrrolidinone (CAS 271580-00-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H15NO and a molecular weight of 153.221 g/mol. It is also known as 4-Cyclopentylpyrrolidin-2-one, 2-Pyrrolidinone,4-cyclopentyl- and 2-Pyrrolidinone,4-cyclopentyl-(9CI). Key properties include a boiling point of 315.9±11.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 183.2±4.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 271580-00-8
Jingsj CID: J-1422195-4
Molecular Formula: C₉H₁₅NO
Chinese Name: 4-环戊基-2-吡咯烷酮
Molecular Weight: 153.221 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	315.9±11.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	183.2±4.2 °C

Frequently Asked Questions

What is the CAS number of 4-Cyclopentyl-2-pyrrolidinone?

The CAS number of 4-Cyclopentyl-2-pyrrolidinone is 271580-00-8.

What are the molecular formula and molecular weight of 4-Cyclopentyl-2-pyrrolidinone?

4-Cyclopentyl-2-pyrrolidinone has molecular formula C9H15NO and molecular weight 153.221 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4-Cyclopentyl-2-pyrrolidinone (CAS 271580-00-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1422195-4 (accessed 2026-10-25).

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