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4-chloro-1-methyl-1H-pyrazole-3-carbaldehyde

4-氯-1-甲基-1H-吡唑-3-甲醛

Also known as: 4-chloro-1-methylpyrazole-3-carbaldehyde, 1H-Pyrazole-3-carboxaldehyde, 4-chloro-1-methyl- (9CI), 4-CHLORO-1-METHYL-1H-PYRAZOLE-3-CARBOXALDEHYDE, 4-CHLORO-1-METHYLPYRAZOLE-3-CARBOXALDEHYDE, AKOS B007391, BUTTPARK 43\57-41, MFCD00103234

4-chloro-1-methyl-1H-pyrazole-3-carbaldehyde (CAS 175204-81-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5ClN2O and a molecular weight of 144.55900 g/mol. It is also known as 4-chloro-1-methylpyrazole-3-carbaldehyde, 1H-Pyrazole-3-carboxaldehyde, 4-chloro-1-methyl- (9CI) and 4-CHLORO-1-METHYL-1H-PYRAZOLE-3-CARBOXALDEHYDE. Key properties include a melting point of 83-86°C, a boiling point of 251.6ºC at 760 mmHg, a density of 1.37g/cm3 and a flash point of 106ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
175204-81-6
Jingsj CID
J-37030-3
Molecular Formula
C5H5ClN2O
Chinese Name
4-氯-1-甲基-1H-吡唑-3-甲醛
Molecular Weight
144.55900 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point83-86°C
Boiling Point251.6ºC at 760 mmHg
Density1.37g/cm3
Flash Point106ºC

Frequently Asked Questions

What is the CAS number of 4-chloro-1-methyl-1H-pyrazole-3-carbaldehyde?

The CAS number of 4-chloro-1-methyl-1H-pyrazole-3-carbaldehyde is 175204-81-6.

What are the molecular formula and molecular weight of 4-chloro-1-methyl-1H-pyrazole-3-carbaldehyde?

4-chloro-1-methyl-1H-pyrazole-3-carbaldehyde has molecular formula C5H5ClN2O and molecular weight 144.55900 g/mol.

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

Last updated:

How to cite: Jingsj. "4-chloro-1-methyl-1H-pyrazole-3-carbaldehyde (CAS 175204-81-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-37030-3 (accessed 2026-10-23).

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