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<h3>Overview</h3>
<p><strong>5-amino-1,3-dihydroindol-2-one</strong> (CAS 87-40-5) is a key heterocyclic intermediate with molecular formula C<sub>8</sub>H<sub>6</sub>N<sub>2</sub>O. It is primarily synthesized via nitration of indolinone followed by selective reduction.</p>
<h3>Application</h3>
<ul>
<li>Pharmaceutical synthesis for antiviral and anticancer agents.</li>
<li>Production of agrochemical herbicides and fungicides.</li>
<li>Development of organic pigments and dye intermediates.</li>
</ul>
<h3>Precautions</h3>
<p>Store in a cool, dry place away from oxidizers. Use appropriate PPE including gloves and goggles to prevent skin contact and inhalation of dust.</p>