1-(5-Chloropyrazin-2-yl)ethanone

Also known as: 5-Acetyl-2-chloropyrazine, 1-(5-Chloro-2-pyrazinyl)ethanone, 1-(5-Chloropyrazinyl)ethanone, 1-(5-chloropyrazin-2-yl)ethan-1-one, 2-Chloro-5-acetylpyrazine, Ethanone, 1-(5-chloro-2-pyrazinyl)-

1-(5-Chloropyrazin-2-yl)ethanone (CAS 160252-31-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C6H5ClN2O and a molecular weight of 156.570 g/mol. Key properties include a boiling point of 259.5±35.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 110.8±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 160252-31-3
Jingsj CID: J-1447378-0
Molecular Formula: C₆H₅ClN₂O
Molecular Weight: 156.570 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	259.5±35.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	110.8±25.9 °C
Exact Mass	156.009033
PSA	42.85000
LogP	1.17
Vapor Pressure	0.0±0.5 mmHg at 25°C
Refractive Index	1.538
Storage Conditions	2-8°C

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 1-(5-Chloropyrazin-2-yl)ethanone?

The CAS number of 1-(5-Chloropyrazin-2-yl)ethanone is 160252-31-3.

What are the molecular formula and molecular weight of 1-(5-Chloropyrazin-2-yl)ethanone?

1-(5-Chloropyrazin-2-yl)ethanone has molecular formula C6H5ClN2O and molecular weight 156.570 g/mol.

What are the upstream and downstream products of 1-(5-Chloropyrazin-2-yl)ethanone?

For 1-(5-Chloropyrazin-2-yl)ethanone, Upstream Products: 5-chloropyrazine-2-carbonyl chloride, 5-Hydroxypyrazine-2-carboxylic acid.

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. "1-(5-Chloropyrazin-2-yl)ethanone (CAS 160252-31-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1447378-0 (accessed 2026-11-09).

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