1-(2-Thienyl)-1,3-butanedione

Also known as: 1,3-Butanedione,1-(2-thienyl)-, 1,3-Butanedione, 1-(2-thienyl)-, 1-(2-Thienyl)-1,3-butanedione, 1-(2-Thienyl)butane-1,3-dione, 1-(2-thienyl)butane-1,3-dione, 1-(2-thiophenyl)-1,3-butanedione, 1-(Thiophen-2-yl)-1,3-butanedione, 1-(Thiophen-2-yl)butane-1,3-dione, 1-(thien-2-yl)-1,3-butanedione, 1-(thien-2-yl)butan-1,3-dione, 1-(thiophen-2-yl)-butane-1,3-dione, 1-thienyl-1,3-butanedione, 1-thiophen-2-ylbutane-1,3-dione, 2-Thenoylacetone, Thenoylacetone, Nsc 80371

1-(2-Thienyl)-1,3-butanedione (CAS 3051-27-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H8O2S and a molecular weight of 168.213 g/mol. Key properties include a boiling point of 291.4±15.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 130.0±20.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3051-27-2
Jingsj CID: J-1082491-6
Molecular Formula: C₈H₈O₂S
Molecular Weight: 168.213 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	291.4±15.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	130.0±20.4 °C
Exact Mass	168.024506
PSA	62.38000
LogP	2.11
Vapor Pressure	0.0±0.6 mmHg at 25°C
Refractive Index	1.538

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1-(2-Thienyl)-1,3-butanedione?

The CAS number of 1-(2-Thienyl)-1,3-butanedione is 3051-27-2.

What are the molecular formula and molecular weight of 1-(2-Thienyl)-1,3-butanedione?

1-(2-Thienyl)-1,3-butanedione has molecular formula C8H8O2S and molecular weight 168.213 g/mol.

What are the upstream and downstream products of 1-(2-Thienyl)-1,3-butanedione?

For 1-(2-Thienyl)-1,3-butanedione, Upstream Products: 2-Acetylthiophene, Ethyl acetate, 2-Iodothiophene; Downstream Products: 3-Methyl-5-(thiophen-2-yl)-1H-pyrazole, 3-Methyl-4-nitro-1H-pyrazole-5-carboxylic 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. "1-(2-Thienyl)-1,3-butanedione (CAS 3051-27-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1082491-6 (accessed 2026-11-09).

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