4-Chloropyrrolo(2,3-d)pyrimidine is an important pharmaceutical intermediate of Tofacitinib
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<h3>Overview</h3>
<p><strong>4-Chloropyrrolo[2,3-d]pyrimidine</strong> (CAS 10586-97-5) is a key heterocyclic intermediate with molecular formula C<sub>6</sub>H<sub>4</sub>ClN<sub>3</sub>. Synthesized via chlorination of pyrrolopyrimidine precursors, it serves as a critical scaffold for pharmaceutical manufacturing.</p>
<h3>Application</h3>
<ul>
<li>Pharmaceutical synthesis: Precursor for kinase inhibitors and antiviral agents.</li>
<li>Medicinal chemistry: Core structure for developing novel nucleoside analogs.</li>
<li>Agrochemical research: Building block for fungicides and herbicides.</li>
</ul>
<h3>Precautions</h3>
<p>Store in sealed containers under inert atmosphere at 2-8°C. Avoid skin contact due to potential irritancy; use appropriate PPE during handling. Not approved for direct clinical use without further derivatization.</p>