1-(4-Thiazolyl)ethanone

4-乙酰基噻唑

Also known as: 4-Acetylthiazole, Methyl 4-thiazolyl ketone, 1-(1,3-Thiazol-4-yl)ethanone, Ethanone, 1-(4-thiazolyl)-, 1-(Thiazol-4-yl)ethanone, 4-Acetyl-1,3-thiazole

1-(4-Thiazolyl)ethanone (CAS 38205-66-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5NOS and a molecular weight of 127.164 g/mol. It is also known as 4-Acetylthiazole, Methyl 4-thiazolyl ketone and 1-(1,3-Thiazol-4-yl)ethanone. Key properties include a melting point of 56ºC, a boiling point of 220.4±13.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 87.1±19.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
38205-66-2
Jingsj CID
J-1377384-3
Molecular Formula
C5H5NOS
Chinese Name
4-乙酰基噻唑
Molecular Weight
127.164 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point56ºC
Boiling Point220.4±13.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point87.1±19.8 °C

Frequently Asked Questions

What is the CAS number of 1-(4-Thiazolyl)ethanone?

The CAS number of 1-(4-Thiazolyl)ethanone is 38205-66-2.

What are the molecular formula and molecular weight of 1-(4-Thiazolyl)ethanone?

1-(4-Thiazolyl)ethanone has molecular formula C5H5NOS and molecular weight 127.164 g/mol.

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

Last updated:

How to cite: Jingsj. "1-(4-Thiazolyl)ethanone (CAS 38205-66-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1377384-3 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.