2-acetamido-5-chlorothiazole

2-乙酰胺基-5-氯噻唑

Also known as: N-(5-chloro-1,3-thiazol-2-yl)acetamide, 2-Acetylamino-5-chlorothiazole, N-(5-chlorothiazol-2-yl)acetamide, MFCD01318098

2-acetamido-5-chlorothiazole (CAS 20256-39-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5ClN2OS and a molecular weight of 176.62400 g/mol. It is also known as N-(5-chloro-1,3-thiazol-2-yl)acetamide, 2-Acetylamino-5-chlorothiazole and N-(5-chlorothiazol-2-yl)acetamide. Key properties include a melting point of 208-210°C and a density of 1.507g/cm3. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 20256-39-7
Jingsj CID: J-47651-3
Molecular Formula: C₅H₅ClN₂OS
Chinese Name: 2-乙酰胺基-5-氯噻唑
Molecular Weight: 176.62400 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	208-210°C
Density	1.507g/cm3

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 2-acetamido-5-chlorothiazole?

The CAS number of 2-acetamido-5-chlorothiazole is 20256-39-7.

What are the molecular formula and molecular weight of 2-acetamido-5-chlorothiazole?

2-acetamido-5-chlorothiazole has molecular formula C5H5ClN2OS and molecular weight 176.62400 g/mol.

Is 2-acetamido-5-chlorothiazole hazardous?

2-acetamido-5-chlorothiazole has GHS signal word Warning.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-acetamido-5-chlorothiazole (CAS 20256-39-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47651-3 (accessed 2026-10-22).

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