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1-(1H-pyrazol-1-yl)ethanone

Also known as: 1-acetylpyrazole, 1-acetyl-1H-pyrazole, 1-acetyl-1H-pyrazol, 1-pyrazol-1-ylethanone, 1-pyrazol-1-yl-ethanone, 1-(1-pyrazolyl)ethanone, N-acetylpyrazole, acetyl pyrazole, Ethanone, 1-(1H-pyrazol-1-yl)-, 1H-pyrazole, 1-acetyl-, REF DUPL: 1-H-pyrazol-1-yl-ethanone

1-(1H-pyrazol-1-yl)ethanone (CAS 10199-64-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6N2O and a molecular weight of 110.11400 g/mol. Key properties include a boiling point of 197.9ºC at 760mmHg, a density of 1.14g/cm3 and a flash point of 73.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
10199-64-1
Jingsj CID
J-1517334-9
Molecular Formula
C5H6N2O
Molecular Weight
110.11400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point197.9ºC at 760mmHg
Density1.14g/cm3
Flash Point73.5ºC
Exact Mass110.04800
PSA34.89000
LogP0.54320
Vapor Pressure0.37mmHg at 25°C
Refractive Index1.552

Frequently Asked Questions

What is the CAS number of 1-(1H-pyrazol-1-yl)ethanone?

The CAS number of 1-(1H-pyrazol-1-yl)ethanone is 10199-64-1.

What are the molecular formula and molecular weight of 1-(1H-pyrazol-1-yl)ethanone?

1-(1H-pyrazol-1-yl)ethanone has molecular formula C5H6N2O and molecular weight 110.11400 g/mol.

What are the upstream and downstream products of 1-(1H-pyrazol-1-yl)ethanone?

For 1-(1H-pyrazol-1-yl)ethanone, Upstream Products: Acetyl chloride, Pyrazole; Downstream Products: N-Benzylacetamide, N-tert-Butylacetamide, Pyrazole.

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

Last updated:

How to cite: Jingsj. "1-(1H-pyrazol-1-yl)ethanone (CAS 10199-64-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1517334-9 (accessed 2026-11-09).

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