1-(1-Methyl-1H-pyrazol-3-yl)ethan-1-one
3-乙酰基-1-甲基-1H-吡唑
Also known as: Ethanone, 1-(1-methyl-1H-pyrazol-3-yl)- (9CI), 3-Acetyl-1-methyl-1H-pyrazole, 1-(1-Methyl-1H-pyrazol-3-yl)ethanone, 1-(1-Methylpyrazol-3-yl)ethanone, 3-Acetyl-1-methylpyrazole
1-(1-Methyl-1H-pyrazol-3-yl)ethan-1-one (CAS 137890-04-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H7IN2O and a molecular weight of 250.037 g/mol. It is also known as Ethanone, 1-(1-methyl-1H-pyrazol-3-yl)- (9CI), 3-Acetyl-1-methyl-1H-pyrazole and 1-(1-Methyl-1H-pyrazol-3-yl)ethanone. Key properties include a boiling point of 306.1±27.0 °C at 760 mmHg, a density of 1.9±0.1 g/cm3 and a flash point of 139.0±23.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 137890-04-1
- Jingsj CID
- J-1356781-1
- Molecular Formula
- C6H7IN2O
- Chinese Name
- 3-乙酰基-1-甲基-1H-吡唑
- Molecular Weight
- 250.037 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 306.1±27.0 °C at 760 mmHg |
|---|---|
| Density | 1.9±0.1 g/cm3 |
| Flash Point | 139.0±23.7 °C |
Frequently Asked Questions
What is the CAS number of 1-(1-Methyl-1H-pyrazol-3-yl)ethan-1-one?
The CAS number of 1-(1-Methyl-1H-pyrazol-3-yl)ethan-1-one is 137890-04-1.
What are the molecular formula and molecular weight of 1-(1-Methyl-1H-pyrazol-3-yl)ethan-1-one?
1-(1-Methyl-1H-pyrazol-3-yl)ethan-1-one has molecular formula C6H7IN2O and molecular weight 250.037 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-Methyl-1H-pyrazol-3-yl)ethan-1-one (CAS 137890-04-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1356781-1 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.