2-Bromobenzenesulfonyl Chloride

• CAT Number: R059517
• CAS Number: 2905-25-1
• Molecular Formula: C6H4BrClO2S
• Molecular Weight: 255.51
• Purity: ≥95%
• Synonyms: o-Bromobenzenesulfonyl Chloride; 2-Bromobenzene-1-sulfonyl Chloride; 2-Bromobenzenesulfonyl Chloride; 2-Bromophenylsulfonyl Chloride; o-Bromobenzenesulfonyl Chloride
• Storage: -20°C
• IUPAC Name: 2-bromobenzenesulfonyl chloride
• InChI: InChI=1S/C6H4BrClO2S/c7-5-3-1-2-4-6(5)11(8,9)10/h1-4H
• InChIKey: VFPWGZNNRSQPBT-UHFFFAOYSA-N
• SMILES: C1=CC=C(C(=C1)S(=O)(=O)Cl)Br

2-Bromobenzenesulfonyl chloride（Cat No.:R059517）is an aromatic sulfonyl halide with the molecular formula C6H4BrClO2S. It consists of a benzene ring substituted with a bromine atom at the ortho (2-) position and a sulfonyl chloride group. This compound is a reactive intermediate commonly used in organic synthesis for sulfonation, particularly in the formation of sulfonamides and sulfonate esters. Its dual electrophilic centers—sulfonyl chloride and aromatic bromine—allow for sequential functionalization in medicinal chemistry, agrochemical development, and material science. It is typically handled under dry conditions due to its reactivity with moisture and nucleophiles.