4-(2-hydroxyethyl)-5-methyl-2,4-dihydropyrazol-3-one

4-(2-羟基乙基)-3-甲基-2-吡唑啉-5-酮

Also known as: 4-(2-Hydroxyethyl)-3-methyl-2-pyrazolin-5-one, 2-Pyrazolin-5-one,4-(2-hydroxyethyl)-3-methyl, 3-Methyl-4-<2-hydroxy-ethyl>-pyrazolon-(5), 3H-Pyrazol-3-one, 2,4-dihydro-4-(2-hydroxyethyl)-5-methyl-, 4-(2-Hydroxyethyl)-3-methyl-1H-pyrazol-5(4H)-one, 4-(2-hydroxy-ethyl)-5-methyl-1,2-dihydro-pyrazol-3-one, 4-(2-hydroxyethyl)-3-methyl-1,4-dihydropyrazol-5-one, BB_SC-6386, TIMTEC-BB SBB008034

4-(2-hydroxyethyl)-5-methyl-2,4-dihydropyrazol-3-one (CAS 7721-54-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H10N2O2 and a molecular weight of 142.15600 g/mol. It is also known as 4-(2-Hydroxyethyl)-3-methyl-2-pyrazolin-5-one, 2-Pyrazolin-5-one,4-(2-hydroxyethyl)-3-methyl and 3-Methyl-4-<2-hydroxy-ethyl>-pyrazolon-(5). Key property: a density of 1.37g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
7721-54-2
Jingsj CID
J-1589571-6
Molecular Formula
C6H10N2O2
Chinese Name
4-(2-羟基乙基)-3-甲基-2-吡唑啉-5-酮
Molecular Weight
142.15600 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Density1.37g/cm3

Frequently Asked Questions

What is the CAS number of 4-(2-hydroxyethyl)-5-methyl-2,4-dihydropyrazol-3-one?

The CAS number of 4-(2-hydroxyethyl)-5-methyl-2,4-dihydropyrazol-3-one is 7721-54-2.

What are the molecular formula and molecular weight of 4-(2-hydroxyethyl)-5-methyl-2,4-dihydropyrazol-3-one?

4-(2-hydroxyethyl)-5-methyl-2,4-dihydropyrazol-3-one has molecular formula C6H10N2O2 and molecular weight 142.15600 g/mol.

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

Last updated:

How to cite: Jingsj. "4-(2-hydroxyethyl)-5-methyl-2,4-dihydropyrazol-3-one (CAS 7721-54-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1589571-6 (accessed 2026-10-25).

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