1-Methyl-1H-pyrazole-5-sulfonyl chloride

1-甲基-1H-吡唑-5-磺酰氯

Also known as: 1-Methyl-1H-pyrazole-5-sulphonyl chloride, 1-Methylpyrazole-5-sulfonyl Chloride, 5-(Chlorosulphonyl)-1-methyl-1H-pyrazole, 2-Methyl-2H-pyrazole-3-sulfonyl chloride, 2-methylpyrazole-3-sulfonyl chloride, 1-Methyl-1H-pyrazol-5-sulfonyl chloride, 1-Methyl-1H-pyrazole-5-sulphonyl chloride 97%, 1-Methyl-1H-pyrazole-5-sulphonylchloride95%, 1H-Pyrazole-5-sulfonyl chloride, 1-methyl-

1-Methyl-1H-pyrazole-5-sulfonyl chloride (CAS 1020721-61-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H5ClN2O2S and a molecular weight of 180.61300 g/mol. It is also known as 1-Methyl-1H-pyrazole-5-sulphonyl chloride, 1-Methylpyrazole-5-sulfonyl Chloride and 5-(Chlorosulphonyl)-1-methyl-1H-pyrazole. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1020721-61-2
Jingsj CID: J-1465562-9
Molecular Formula: C₄H₅ClN₂O₂S
Chinese Name: 1-甲基-1H-吡唑-5-磺酰氯
Molecular Weight: 180.61300 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of 1-Methyl-1H-pyrazole-5-sulfonyl chloride?

The CAS number of 1-Methyl-1H-pyrazole-5-sulfonyl chloride is 1020721-61-2.

What are the molecular formula and molecular weight of 1-Methyl-1H-pyrazole-5-sulfonyl chloride?

1-Methyl-1H-pyrazole-5-sulfonyl chloride has molecular formula C4H5ClN2O2S and molecular weight 180.61300 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "1-Methyl-1H-pyrazole-5-sulfonyl chloride (CAS 1020721-61-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1465562-9 (accessed 2026-10-25).

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