*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>Xanthine-13C15N2 is a <strong>stable isotopically labeled</strong> reference standard derived from xanthine. Synthesized via <strong>isotopic enrichment</strong> processes, its molecular formula is C5H4N4O2 with CAS No. 168790-56-7.</p>
<h3>Application</h3>
<ul>
<li><strong>Metabolomics:</strong> Serves as an internal standard for quantifying purine metabolism in biological fluids.</li>
<li><strong>Pharmacokinetics:</strong> Used in tracer studies to track drug absorption and distribution profiles.</li>
<li><strong>Quality Control:</strong> Validates analytical instruments like LC-MS/MS for precision testing.</li>
</ul>
<h3>Precautions</h3>
<p>Store at <strong>-20°C</strong> in a dry, inert atmosphere. Handle strictly under laboratory safety protocols; this material is for research use only and not approved for clinical administration.</p>