2-Methyl-5-oxocyclopent-1-enyl propionate

甲基环戊烯酮醇丙酸酯

Also known as: Methyl cyclopentenolone propionate, Cyclotene propionate, (2-methyl-5-oxo-cyclopenten-1-yl) propanoate, (2-methyl-5-oxocyclopenten-1-yl) propanoate, 2-Methyl-5-oxocyclopent-1-en-1-yl propionate, 2-methyl-5-oxocyclopent-1-enyl propionate, 3-Methyl-2-(1-oxopropoxy)-2-cyclopenten-1-one, Propionic acid 2-methyl-5-oxo-1-cyclopentenyl ester, UNII-2FBU83W2QL, EINECS 201-751-9

2-Methyl-5-oxocyclopent-1-enyl propionate (CAS 87-55-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H12O3 and a molecular weight of 168.19000 g/mol. It is also known as Methyl cyclopentenolone propionate, Cyclotene propionate and (2-methyl-5-oxo-cyclopenten-1-yl) propanoate. Key properties include a melting point of 36°C (凝固点), a boiling point of 291.6ºC at 760 mmHg and a density of 1.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
87-55-8
Jingsj CID
J-33998-2
Molecular Formula
C9H12O3
Chinese Name
甲基环戊烯酮醇丙酸酯
Molecular Weight
168.19000 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point36°C (凝固点)
Boiling Point291.6ºC at 760 mmHg
Density1.1 g/cm3

Frequently Asked Questions

What is the CAS number of 2-Methyl-5-oxocyclopent-1-enyl propionate?

The CAS number of 2-Methyl-5-oxocyclopent-1-enyl propionate is 87-55-8.

What are the molecular formula and molecular weight of 2-Methyl-5-oxocyclopent-1-enyl propionate?

2-Methyl-5-oxocyclopent-1-enyl propionate has molecular formula C9H12O3 and molecular weight 168.19000 g/mol.

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

Last updated:

How to cite: Jingsj. "2-Methyl-5-oxocyclopent-1-enyl propionate (CAS 87-55-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33998-2 (accessed 2026-10-23).

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