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<h3>Overview</h3>
<p><strong>3,4-Diamino-5-chloro-benzoic acid methyl ester</strong> (CAS 102896-74-6) is a specialized pharmaceutical intermediate synthesized via nitration and selective reduction of chlorinated benzoic acid derivatives. Molecular formula: <strong>C8H9ClN2O2</strong>. This compound serves as a critical building block for heterocyclic synthesis in advanced medicinal chemistry.</p>
<h3>Application</h3>
<ul>
<li>Synthesis of quinazoline-based kinase inhibitors for oncology research.</li>
<li>Production of fluorescent probes targeting specific cellular receptors.</li>
<li>Manufacturing of high-purity active pharmaceutical ingredients (APIs).</li>
</ul>
<h3>Precautions</h3>
<p>Store under inert atmosphere at 2-8°C to prevent hydrolysis. Handle with PPE due to potential sensitization; avoid inhalation or skin contact. Not intended for direct clinical use without further derivatization.</p>