*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p><strong>DL-Homocysteine-d4</strong> is a deuterium-labeled internal standard for quantitative analysis via LC-MS/MS. Synthesized via isotopic exchange or enzymatic pathways, its molecular formula is <strong>C5H10D4NO2S</strong> (CAS: 26879-54-9).</p>
<h3>Application</h3>
<ul>
<li>Metabolomics research for homocysteine pathway tracing.</li>
<li>Pharmacokinetic studies in clinical drug development.</li>
<li>Quality control calibration in pharmaceutical manufacturing.</li>
</ul>
<h3>Precautions</h3>
<p>Store under inert atmosphere at -20°C. Use appropriate PPE to avoid inhalation; not approved for direct human therapeutic use.</p>