1-Methyl-1H-pyrazole-4-sulfonyl chloride

1-甲基-1H-吡唑-4-磺酰氯

Also known as: 1-Methyl-1H-pyrazole-4-sulfonyl chloride, 1-methylpyrazole-4-sulfonyl chloride, 1-methyl-4-pyrazolesulfonyl chloride, 4-(Chlorosulphonyl)-1-methyl-1H-pyrazole, 1H-Pyrazole-4-sulfonyl chloride, 1-methyl-, 1-methyl-1H-pyrazole-4-sulphonyl chloride, 1H-Pyrazole-4-sulfonylchloride,1-methyl-(9CI)

1-Methyl-1H-pyrazole-4-sulfonyl chloride (CAS 288148-34-5) 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 180.613 g/mol. It is also known as 1-methylpyrazole-4-sulfonyl chloride, 1-methyl-4-pyrazolesulfonyl chloride and 4-(Chlorosulphonyl)-1-methyl-1H-pyrazole. Key properties include a boiling point of 295.7±13.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 132.6±19.8 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

288148-34-5

Jingsj CID

J-1355099-2

Molecular Formula

C₄H₅ClN₂O₂S

Chinese Name

1-甲基-1H-吡唑-4-磺酰氯

Molecular Weight

180.613 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026