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2-(3-oxocyclopentyl)acetic acid

Also known as: 3-Oxocyclopentylacetic acid, (3-Oxocyclopentyl)acetic acid, 3-Oxo-cyclopentaneacetic acid, Cyclopentaneacetic acid, 3-oxo-, cyclopentan-3-one-1-acetic acid, (+/-)-3-Oxocyclopentanessigsaeure

2-(3-oxocyclopentyl)acetic acid (CAS 3128-05-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H10O3 and a molecular weight of 142.152 g/mol. Key properties include a boiling point of 316.5±15.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 159.5±16.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3128-05-0
Jingsj CID
J-1519970-9
Molecular Formula
C7H10O3
Molecular Weight
142.152 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point316.5±15.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point159.5±16.9 °C
Exact Mass142.062988
PSA54.37000
LogP-0.58
Vapor Pressure0.0±1.4 mmHg at 25°C
Refractive Index1.492

Customs & Trade Information

HS Code2918300090
Summary2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-(3-oxocyclopentyl)acetic acid?

The CAS number of 2-(3-oxocyclopentyl)acetic acid is 3128-05-0.

What are the molecular formula and molecular weight of 2-(3-oxocyclopentyl)acetic acid?

2-(3-oxocyclopentyl)acetic acid has molecular formula C7H10O3 and molecular weight 142.152 g/mol.

What are the upstream and downstream products of 2-(3-oxocyclopentyl)acetic acid?

For 2-(3-oxocyclopentyl)acetic acid, Upstream Products: 2-Cyclopenten-1-one, Diethyl trans-3-hexenedioate, Norcamphor.

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

Last updated:

How to cite: Jingsj. "2-(3-oxocyclopentyl)acetic acid (CAS 3128-05-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1519970-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.