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<h3>Overview</h3>
<p><strong>1,4,7-Triazacyclononane trihydrochloride</strong> (CAS: 15699-20-8) is a macrocyclic chelating agent derived from cyclen. It serves as a critical precursor in the synthesis of radiopharmaceuticals and MRI contrast agents. The compound features a C<sub>9</sub>H<sub>21</sub>N<sub>3</sub>Cl<sub>3</sub> molecular structure, enabling high-affinity metal coordination.</p>
<h3>Application</h3>
<ul>
<li>Radiopharmaceutical manufacturing for PET imaging diagnostics.</li>
<li>Synthesis of gadolinium-based contrast agents for MRI scans.</li>
<li>Research applications in bioconjugation and metal ion sequestration.</li>
</ul>
<h3>Precautions</h3>
<p>Store under inert atmosphere at controlled temperatures to prevent degradation. Use appropriate PPE including gloves and eye protection during handling due to potential irritant properties. Ensure strict adherence to pharmaceutical grade purity standards for clinical applications.</p>