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<h3>Overview</h3>
<p><strong>4-Ethoxybenzenesulfonyl chloride</strong> (CAS 1205-76-9, C8H9ClO3S) is a sulfonylating agent synthesized via chlorosulfonation of ethoxybenzene. It serves as a key intermediate in pharmaceutical manufacturing.</p>
<h3>Application</h3>
<ul>
<li>Synthesis of sulfonamide antibiotics and diuretics.</li>
<li>Production of agrochemical herbicides and fungicides.</li>
<li>Manufacturing of specialized dyes and pigments.</li>
</ul>
<h3>Precautions</h3>
<p>Store in cool, dry conditions under inert atmosphere. Strict PPE required due to corrosive nature; reacts violently with water releasing HCl gas.</p>