1-methylpyrazole-4-sulfonyl chloride 288148-34-5 4-(Chlorosulphonyl)-1-methyl-1H-pyrazole CAS 288148-34-5

Purity 97%+In StockPharmaceutical Standards
CAS No.288148-34-5
Molecular FormulaC3H7ClN2O2S
Molecular Weight170.62 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-methylpyrazole-4-sulfonyl chloride 288148-34-5 4-(Chlorosulphonyl)-1-methyl-1H-pyrazole CAS 288148-34-5 chemical structure

Description

1-methylpyrazole-4-sulfonyl chloride 288148-34-5 4-(Chlorosulphonyl)-1-methyl-1H-pyrazole (CAS 288148-34-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C3H7ClN2O2S. Molecular weight: 170.62 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.

Physical & Chemical Properties

Molecular FormulaC3H7ClN2O2S
Molecular Weight170.62 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)2025
Halogen ContentCl-containing
Nitrogen Atoms2
Sulfur Atoms1

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