4-Methyl-3(2H)-pyridazinone

4-甲基-3(2H)-哒嗪酮

Also known as: 3-Hydroxy-4-methylpyridazine, 4-Methyl-2,3-dihydropyridazin-3-one, 4-Methylpyridazin-3(2H)-one, 3(2H)-Pyridazinone, 4-methyl-, 4-Methylpyridazin-3-ol

4-Methyl-3(2H)-pyridazinone (CAS 33471-40-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H6N2O and a molecular weight of 110.114 g/mol. It is also known as 3-Hydroxy-4-methylpyridazine, 4-Methyl-2,3-dihydropyridazin-3-one and 4-Methylpyridazin-3(2H)-one. Key properties include a melting point of 151-153°C and a density of 1.2±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
33471-40-8
Jingsj CID
J-908860-1
Molecular Formula
C5H6N2O
Chinese Name
4-甲基-3(2H)-哒嗪酮
Molecular Weight
110.114 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point151-153°C
Density1.2±0.1 g/cm3

Frequently Asked Questions

What is the CAS number of 4-Methyl-3(2H)-pyridazinone?

The CAS number of 4-Methyl-3(2H)-pyridazinone is 33471-40-8.

What are the molecular formula and molecular weight of 4-Methyl-3(2H)-pyridazinone?

4-Methyl-3(2H)-pyridazinone has molecular formula C5H6N2O and molecular weight 110.114 g/mol.

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

Last updated:

How to cite: Jingsj. "4-Methyl-3(2H)-pyridazinone (CAS 33471-40-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-908860-1 (accessed 2026-10-25).

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