1-(2-chloropyridin-3-yl)ethan-1-one

1-(2-氯吡啶-3-基)乙酮

Also known as: 2-chloro-3-acetylpyridine, 3-acetyl-2-chloropyridine, 1-(2-chloro-3-pyridinyl)ethanone, ethanone, 1-(2-chloro-3-pyridinyl)-, 1-(2-chloropyridin-3-yl)ethanone

1-(2-chloropyridin-3-yl)ethan-1-one (CAS 55676-21-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H6ClNO and a molecular weight of 155.582 g/mol. It is also known as 2-chloro-3-acetylpyridine, 3-acetyl-2-chloropyridine and 1-(2-chloro-3-pyridinyl)ethanone. Key properties include a boiling point of 232.0±20.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 94.1±21.8 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
55676-21-6
Jingsj CID
J-1467345-0
Molecular Formula
C7H6ClNO
Chinese Name
1-(2-氯吡啶-3-基)乙酮
Molecular Weight
155.582 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point232.0±20.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point94.1±21.8 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 1-(2-chloropyridin-3-yl)ethan-1-one?

The CAS number of 1-(2-chloropyridin-3-yl)ethan-1-one is 55676-21-6.

What are the molecular formula and molecular weight of 1-(2-chloropyridin-3-yl)ethan-1-one?

1-(2-chloropyridin-3-yl)ethan-1-one has molecular formula C7H6ClNO and molecular weight 155.582 g/mol.

Is 1-(2-chloropyridin-3-yl)ethan-1-one hazardous?

1-(2-chloropyridin-3-yl)ethan-1-one has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "1-(2-chloropyridin-3-yl)ethan-1-one (CAS 55676-21-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1467345-0 (accessed 2026-10-22).

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