1-(1,3,5-Trimethyl-1H-pyrazol-4-yl)ethanone

1-(1,3,5-三甲基-1H-吡唑-4-基)乙酮

Also known as: 1,3,5-Trimethyl-4-acetylpyrazole, 4-Acetyl-1,3,5-trimethylpyrazole, Ethanone, 1-(1,3,5-trimethyl-1H-pyrazol-4-yl)-

1-(1,3,5-Trimethyl-1H-pyrazol-4-yl)ethanone (CAS 1125-28-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H12N2O and a molecular weight of 152.19400 g/mol. It is also known as 1,3,5-Trimethyl-4-acetylpyrazole, 4-Acetyl-1,3,5-trimethylpyrazole and Ethanone, 1-(1,3,5-trimethyl-1H-pyrazol-4-yl)-. Key properties include a boiling point of 243.4ºC at 760 mmHg, a density of 1.07g/cm3 and a flash point of 101ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1125-28-6
Jingsj CID
J-26524-9
Molecular Formula
C8H12N2O
Chinese Name
1-(1,3,5-三甲基-1H-吡唑-4-基)乙酮
Molecular Weight
152.19400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point243.4ºC at 760 mmHg
Density1.07g/cm3
Flash Point101ºC

Frequently Asked Questions

What is the CAS number of 1-(1,3,5-Trimethyl-1H-pyrazol-4-yl)ethanone?

The CAS number of 1-(1,3,5-Trimethyl-1H-pyrazol-4-yl)ethanone is 1125-28-6.

What are the molecular formula and molecular weight of 1-(1,3,5-Trimethyl-1H-pyrazol-4-yl)ethanone?

1-(1,3,5-Trimethyl-1H-pyrazol-4-yl)ethanone has molecular formula C8H12N2O and molecular weight 152.19400 g/mol.

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

Last updated:

How to cite: Jingsj. "1-(1,3,5-Trimethyl-1H-pyrazol-4-yl)ethanone (CAS 1125-28-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26524-9 (accessed 2026-10-24).

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