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<h3>Overview</h3>
<p><strong>3-Methoxythiophene</strong> (CAS 1065-94-7) is a key heterocyclic intermediate with formula C5H6OS. It is synthesized via electrophilic substitution on thiophene followed by methoxylation, serving as a precursor for advanced pharmaceuticals and agrochemicals.</p>
<h3>Application</h3>
<ul>
<li>Pharmaceutical synthesis: Building block for novel drug candidates targeting CNS disorders.</li>
<li>Agricultural chemicals: Intermediate in developing selective herbicides and fungicides.</li>
<li>Materials science: Component in organic semiconductors and conductive polymers.</li>
</ul>
<h3>Precautions</h3>
<p>Store under inert atmosphere at -20°C to prevent polymerization. Use appropriate PPE including nitrile gloves and safety goggles due to flammability and potential skin irritation.</p>