Description

4-Ethylbenzenesulfonyl fluoride (CAS No. 455-20-9) is a high-purity organosulfur compound with the molecular formula C₈H₉FO₂S. This specialized chemical features a sulfonyl fluoride functional group attached to a 4-ethyl-substituted benzene ring, making it a valuable intermediate in organic synthesis and medicinal chemistry. With a molecular weight of 188.22 g/mol, this compound is particularly useful for click chemistry applications and as a protease inhibitor in biochemical research. Our product is rigorously tested to ensure ≥98% purity (HPLC) and is supplied in sealed, light-resistant packaging to maintain stability. Ideal for researchers working on activity-based protein profiling (ABPP), suicide substrates, or covalent inhibitor development.

Key Features:

• High chemical purity (≥98%) verified by HPLC and NMR
• Stable sulfonyl fluoride moiety for selective covalent modification
• Compatible with various organic solvents including DMSO and DMF
• Stored under inert atmosphere to prevent degradation
• Available in research quantities from 100mg to 10g scale

Properties

• CAS Number: 455-20-9
• Complexity: 222
• IUPAC Name: 4-ethylbenzenesulfonyl fluoride
• InChI: InChI=1S/C8H9FO2S/c1-2-7-3-5-8(6-4-7)12(9,10)11/h3-6H,2H2,1H3
• InChI Key: YKTVOVMXBLLWNM-UHFFFAOYSA-N
• Exact Mass: 188.03072886
• Molecular Formula: C8H9FO2S
• Molecular Weight: 188.22
• SMILES: CCC1=CC=C(C=C1)S(=O)(=O)F
• Topological: 42.5
• Monoisotopic Mass: 188.03072886
• Synonyms: 455-20-9, 4-Ethylbenzenesulfonyl fluoride, Benzenesulfonyl fluoride, 4-ethyl-, EINECS 207-241-2, DTXSID5060017, DTXCID9040425, p-Ethylbenzenesulphonyl fluoride, 4-ethylbenzene-1-sulfonyl fluoride, P-ETHYLBENZENESULFONYL FLUORIDE, SCHEMBL16066056, 4-ethylbenzene-1-sulfonylfluoride, YKTVOVMXBLLWNM-UHFFFAOYSA-N, AAA45520, AKOS006323110, NS00043527, EN300-317901, G44909, Z1198321297

Application

4-Ethylbenzenesulfonyl fluoride serves as a versatile building block in medicinal chemistry, particularly for developing covalent enzyme inhibitors targeting serine proteases. Researchers utilize this compound in activity-based protein profiling (ABPP) studies to investigate enzyme function in complex biological systems. The sulfonyl fluoride group enables selective, irreversible binding to active site residues, making it valuable for target identification and validation in drug discovery pipelines.

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.