4-Thien-2-yl-2,4-dioxobutanoic acid

Also known as: 2,4-dioxo-4-(thiophen-2-yl)butanoic acid, 2,4-dioxo-4-(thien-2-yl)butanoic acid, 2,4-dioxo-4-thiophen-2-ylbutanoic acid, 4-thienyl-2,4-dioxobutanoic acid, 2-Thiophenebutanoic acid, α,γ-dioxo-

4-Thien-2-yl-2,4-dioxobutanoic acid (CAS 105356-57-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H6O4S and a molecular weight of 198.19600 g/mol. Key properties include a boiling point of 399.2ºC at 760mmHg, a density of 1.465g/cm3 and a flash point of 195.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 105356-57-8
Jingsj CID: J-1139655-7
Molecular Formula: C₈H₆O₄S
Molecular Weight: 198.19600 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	399.2ºC at 760mmHg
Density	1.465g/cm3
Flash Point	195.2ºC
Exact Mass	197.99900
PSA	99.68000
LogP	0.97460
Vapor Pressure	4.34E-07mmHg at 25°C
Refractive Index	1.588

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 4-Thien-2-yl-2,4-dioxobutanoic acid?

The CAS number of 4-Thien-2-yl-2,4-dioxobutanoic acid is 105356-57-8.

What are the molecular formula and molecular weight of 4-Thien-2-yl-2,4-dioxobutanoic acid?

4-Thien-2-yl-2,4-dioxobutanoic acid has molecular formula C8H6O4S and molecular weight 198.19600 g/mol.

What are the upstream and downstream products of 4-Thien-2-yl-2,4-dioxobutanoic acid?

For 4-Thien-2-yl-2,4-dioxobutanoic acid, Upstream Products: 2-Acetylthiophene, Ethyl 2,4-dioxo-4-(thiophen-2-yl)butanoate.

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. "4-Thien-2-yl-2,4-dioxobutanoic acid (CAS 105356-57-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1139655-7 (accessed 2026-11-09).

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