(R)-4-Mercapto-2-pyrrolidone

Also known as: (4R)-4-Mercapto-2-pyrrolidinone, (4R)-4-sulfanylpyrrolidin-2-one, 2-Pyrrolidinone,4-mercapto-,(4R)-, (R)-4-Mercaptopyrrolidin-2-one

(R)-4-Mercapto-2-pyrrolidone (CAS 157429-42-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C4H7NOS and a molecular weight of 117.170 g/mol. Key properties include a boiling point of 324.9±35.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 150.3±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 157429-42-0
Jingsj CID: J-1419937-2
Molecular Formula: C₄H₇NOS
Molecular Weight: 117.170 g/mol
Category: Ketones
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	324.9±35.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	150.3±25.9 °C
Exact Mass	117.024834
PSA	67.90000
LogP	-1.24
Vapor Pressure	0.0±0.7 mmHg at 25°C
Refractive Index	1.541

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 (R)-4-Mercapto-2-pyrrolidone?

The CAS number of (R)-4-Mercapto-2-pyrrolidone is 157429-42-0.

What are the molecular formula and molecular weight of (R)-4-Mercapto-2-pyrrolidone?

(R)-4-Mercapto-2-pyrrolidone has molecular formula C4H7NOS and molecular weight 117.170 g/mol.

What are the upstream and downstream products of (R)-4-Mercapto-2-pyrrolidone?

For (R)-4-Mercapto-2-pyrrolidone, Upstream Products: (R)-4-Acetylthio-2-pyrrolidinone; Downstream Products: Diphenyl hydrogen phosphate.

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. "(R)-4-Mercapto-2-pyrrolidone (CAS 157429-42-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1419937-2 (accessed 2026-11-09).

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