6-Chloro-5-methylpyridazin-3(2H)-one

Also known as: 3(2H)-Pyridazinone, 6-chloro-5-methyl-, 3-chloro-4-methyl-1H-pyridazin-6-one, 6-Chloro-3-hydroxy-5-methylpyridazine, 6-Chloro-5-methyl-3(2H)-pyridazinone, 6-Chloro-5-methylpyridazin-3-ol, 6-chloro-5-methyl-2H-pyridazin-3-one, 6-chloro-5-methylpyridazin-3(2H)-one

6-Chloro-5-methylpyridazin-3(2H)-one (CAS 1703-07-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H5ClN2O and a molecular weight of 144.559 g/mol. Key property: a density of 1.5±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1703-07-7
Jingsj CID: J-1134531-6
Molecular Formula: C₅H₅ClN₂O
Molecular Weight: 144.559 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Density	1.5±0.1 g/cm3
Exact Mass	144.009033
PSA	46.01000
LogP	0.83
Refractive Index	1.609
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 6-Chloro-5-methylpyridazin-3(2H)-one?

The CAS number of 6-Chloro-5-methylpyridazin-3(2H)-one is 1703-07-7.

What are the molecular formula and molecular weight of 6-Chloro-5-methylpyridazin-3(2H)-one?

6-Chloro-5-methylpyridazin-3(2H)-one has molecular formula C5H5ClN2O and molecular weight 144.559 g/mol.

What are the upstream and downstream products of 6-Chloro-5-methylpyridazin-3(2H)-one?

For 6-Chloro-5-methylpyridazin-3(2H)-one, Downstream Products: 5-Methyl-3(2H)-pyridazinone, 3-Chloro-5-methylpyridazine.

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. "6-Chloro-5-methylpyridazin-3(2H)-one (CAS 1703-07-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1134531-6 (accessed 2026-11-09).

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