What is Hinsberg's reagent? What is its use?

Explanation

### Step-by-Step Solution:

**Step 1: Definition of Hinsberg's Reagent**
Hinsberg's reagent is benzene sulfonyl chloride, which can be represented by the chemical formula C6H5SO2Cl. It consists of a benzene ring attached to a sulfonyl group (SO2) and a chlorine atom.

**Step 2: Structure of Hinsberg's Reagent**
The structure of Hinsberg's reagent includes:
- A benzene ring (C6H5)
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