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3-Hydroxycyclopent-2-en-1-one

Also known as: 2-Cyclopenten-1-one, 3-hydroxy-, 2-Cyclopenten-1-one,3-hydroxy, 3-hydroxy-1-cyclopent-2-enone, 3-hydroxy-2-cyclopenten-1-one, 3-hydroxycyclopent-2-en-1-one, 3-hydroxycyclopent-2-enone, 3-hydroxycyclopentenone, cyclopentenolone

3-Hydroxycyclopent-2-en-1-one (CAS 5870-62-2) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H6O2 and a molecular weight of 98.09990 g/mol. Key properties include a boiling point of 213ºC at 760mmHg, a density of 1.334g/cm3 and a flash point of 84.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5870-62-2
Jingsj CID
J-1178268-6
Molecular Formula
C5H6O2
Molecular Weight
98.09990 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point213ºC at 760mmHg
Density1.334g/cm3
Flash Point84.8ºC
Exact Mass98.03680
PSA37.30000
LogP0.79120
Refractive Index1.582
Storage Conditions2-8°C

Customs & Trade Information

HS Code2914400090
Summary2914400090 other ketone-alcohols and ketone-aldehydes。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 3-Hydroxycyclopent-2-en-1-one?

The CAS number of 3-Hydroxycyclopent-2-en-1-one is 5870-62-2.

What are the molecular formula and molecular weight of 3-Hydroxycyclopent-2-en-1-one?

3-Hydroxycyclopent-2-en-1-one has molecular formula C5H6O2 and molecular weight 98.09990 g/mol.

What are the upstream and downstream products of 3-Hydroxycyclopent-2-en-1-one?

For 3-Hydroxycyclopent-2-en-1-one, Upstream Products: methyl 4-methoxy-2-oxocyclopent-3-ene-1-carboxylate; Downstream Products: 3-Hydroxy-2-phenylcyclopent-2-enone.

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

Last updated:

How to cite: Jingsj. "3-Hydroxycyclopent-2-en-1-one (CAS 5870-62-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1178268-6 (accessed 2026-11-09).

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