3-Hydroxy-2-pyrrolidinone

Also known as: 3-Hydroxy-2-oxopyrrolidine, 3-Hydroxy-2-oxo-pyrrolidin, 3-Hydroxy-pyrrolidin-2-on, 3-Hydroxypyrrolidin-2-on, 3-Hydroxypyrrolidone, 3-hydroxy-2-pyrrolidone, 3-hydroxy-pyrrolidin-2-one, 3-hydroxypyrrolidin-2-one, Racemate

3-Hydroxy-2-pyrrolidinone (CAS 15166-68-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C4H7NO2 and a molecular weight of 101.104 g/mol. Key properties include a melting point of 75ºC, a boiling point of 363.6±35.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 173.7±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 15166-68-4
Jingsj CID: J-1413301-8
Molecular Formula: C₄H₇NO₂
Molecular Weight: 101.104 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	75ºC
Boiling Point	363.6±35.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	173.7±25.9 °C
Exact Mass	101.047676
PSA	49.33000
LogP	-2.82
Vapor Pressure	0.0±1.8 mmHg at 25°C
Refractive Index	1.513
Storage Conditions	2-8°C

Customs & Trade Information

HS Code	2933790090
Summary	2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 3-Hydroxy-2-pyrrolidinone?

The CAS number of 3-Hydroxy-2-pyrrolidinone is 15166-68-4.

What are the molecular formula and molecular weight of 3-Hydroxy-2-pyrrolidinone?

3-Hydroxy-2-pyrrolidinone has molecular formula C4H7NO2 and molecular weight 101.104 g/mol.

What are the upstream and downstream products of 3-Hydroxy-2-pyrrolidinone?

For 3-Hydroxy-2-pyrrolidinone, Upstream Products: α-Hydroxy-γ-butyrolactone, 1-(Trimethylsilyl)pyrrolidin-2-one, 4-Amino-2-hydroxybutanoic acid.

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

Last updated: 8/21/2026

How to cite: Jingsj. "3-Hydroxy-2-pyrrolidinone (CAS 15166-68-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1413301-8 (accessed 2026-11-09).

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