1-methyl-1H-pyrazole-4-carbonyl chloride

Also known as: 1H-Pyrazole-4-carbonyl chloride, 1-methyl- (9CI), 1-methyl-1H-pyrazole-4-carboxylic acid chloride, 1-methyl-4-pyrazolecarbonyl chloride, 1-methylpyrazole-4-carbonyl chloride

1-methyl-1H-pyrazole-4-carbonyl chloride (CAS 79583-19-0) 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. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 79583-19-0
Jingsj CID: J-1073401-7
Molecular Formula: C₅H₅ClN₂O
Molecular Weight: 144.55900 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	144.00900
PSA	34.89000
LogP	0.79910

Customs & Trade Information

HS Code	2933199090
Summary	2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1-methyl-1H-pyrazole-4-carbonyl chloride?

The CAS number of 1-methyl-1H-pyrazole-4-carbonyl chloride is 79583-19-0.

What are the molecular formula and molecular weight of 1-methyl-1H-pyrazole-4-carbonyl chloride?

1-methyl-1H-pyrazole-4-carbonyl chloride has molecular formula C5H5ClN2O and molecular weight 144.55900 g/mol.

What are the upstream and downstream products of 1-methyl-1H-pyrazole-4-carbonyl chloride?

For 1-methyl-1H-pyrazole-4-carbonyl chloride, Upstream Products: 1-methyl-1H-pyrazole-4-carboxylic acid; Downstream Products: 1-(1-Methyl-1H-pyrazol-4-yl)ethanone, 2-Bromo-1-(1-methyl-1H-pyrazol-4-yl)ethanone.

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

Last updated: 8/21/2026

How to cite: Jingsj. "1-methyl-1H-pyrazole-4-carbonyl chloride (CAS 79583-19-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1073401-7 (accessed 2026-11-09).

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