1-(1H-pyrazol-3-yl)ethanone
3-乙酰基吡唑
Also known as: Ethanone, 1-(1H-pyrazol-3-yl)- (9CI), 3-Acetylpyrazole, 1-(3-Pyrazolyl)ethanone, 1-(1H-pyrazol-5-yl)ethanone, 1-(1H-Pyrazol-3-yl)ethanone HCL, 1-(1(2)H-pyrazol-3-yl)-ethanone, 3(5)-acetylpyrazole
1-(1H-pyrazol-3-yl)ethanone (CAS 20583-33-9) 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 110.114 g/mol. It is also known as Ethanone, 1-(1H-pyrazol-3-yl)- (9CI), 3-Acetylpyrazole and 1-(3-Pyrazolyl)ethanone. Key properties include a boiling point of 277.7±13.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 125.9±26.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20583-33-9
- Jingsj CID
- J-1519793-5
- Molecular Formula
- C5H6N2O
- Chinese Name
- 3-乙酰基吡唑
- Molecular Weight
- 110.114 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 277.7±13.0 °C at 760 mmHg |
|---|---|
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 125.9±26.3 °C |
Frequently Asked Questions
What is the CAS number of 1-(1H-pyrazol-3-yl)ethanone?
The CAS number of 1-(1H-pyrazol-3-yl)ethanone is 20583-33-9.
What are the molecular formula and molecular weight of 1-(1H-pyrazol-3-yl)ethanone?
1-(1H-pyrazol-3-yl)ethanone 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. "1-(1H-pyrazol-3-yl)ethanone (CAS 20583-33-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1519793-5 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.