3-Chloropyrazin-2(1H)-one

Also known as: 3-chloro-1,2-dihydropyrazin-2-one, 3-chloro-2(1H)-pyrazinone, 3-chloropyrazin-2-ol, 2(1H)-Pyrazinone, 3-chloro-, 3-chloro-1H-pyrazin-2-one

3-Chloropyrazin-2(1H)-one (CAS 105985-17-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C4H3ClN2O and a molecular weight of 130.53200 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 105985-17-9
Jingsj CID: J-1125334-2
Molecular Formula: C₄H₃ClN₂O
Molecular Weight: 130.53200 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	129.99300
PSA	45.75000
LogP	0.42330

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 3-Chloropyrazin-2(1H)-one?

The CAS number of 3-Chloropyrazin-2(1H)-one is 105985-17-9.

What are the molecular formula and molecular weight of 3-Chloropyrazin-2(1H)-one?

3-Chloropyrazin-2(1H)-one has molecular formula C4H3ClN2O and molecular weight 130.53200 g/mol.

What are the upstream and downstream products of 3-Chloropyrazin-2(1H)-one?

For 3-Chloropyrazin-2(1H)-one, Upstream Products: 2,3-Dichloropyrazine, 2-Chlorobenzenesulfonamide.

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. "3-Chloropyrazin-2(1H)-one (CAS 105985-17-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1125334-2 (accessed 2026-11-09).

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