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5-Acetylthiophene-2-carbaldehyde

Also known as: 2-Acetyl-5-formylthiophene, 2-Ethanoyl-5-formylthiophene, 5-Acetyl-2-thenaldehyde, 2-Thiophenecarboxaldehyde, 5-acetyl-, 5-Acetyl-2-thiophenecarbaldehyde, 5-Acetylthiophene-2-carbaldehyde, 5-Formyl-2-acetylthiophene, MFCD00509280

5-Acetylthiophene-2-carbaldehyde (CAS 4565-29-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H6O2S and a molecular weight of 154.186 g/mol. Key properties include a melting point of 104-105°C, a boiling point of 307.4±27.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 139.7±23.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4565-29-1
Jingsj CID
J-45112-7
Molecular Formula
C7H6O2S
Molecular Weight
154.186 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point104-105°C
Boiling Point307.4±27.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point139.7±23.7 °C
Exact Mass154.008850
PSA62.38000
LogP0.66
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.594

Customs & Trade Information

HS Code2934999090
Summary2934999090. 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 5-Acetylthiophene-2-carbaldehyde?

The CAS number of 5-Acetylthiophene-2-carbaldehyde is 4565-29-1.

What are the molecular formula and molecular weight of 5-Acetylthiophene-2-carbaldehyde?

5-Acetylthiophene-2-carbaldehyde has molecular formula C7H6O2S and molecular weight 154.186 g/mol.

What are the upstream and downstream products of 5-Acetylthiophene-2-carbaldehyde?

For 5-Acetylthiophene-2-carbaldehyde, Upstream Products: 2-Acetylthiophene, 2-Methyl-2-(2-thienyl)-1,3-dioxolane; Downstream Products: 1-(4-nitrothiophen-2-yl)ethanone.

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

Last updated:

How to cite: Jingsj. "5-Acetylthiophene-2-carbaldehyde (CAS 4565-29-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45112-7 (accessed 2026-11-09).

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