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<h3>Overview</h3>
<p><strong>Diethyl Phosphate-13C4 Sodium Salt</strong> is a stable isotopically labeled internal standard for LC-MS/MS analysis. Synthesized via esterification with <strong>13C-enriched ethanol</strong>, it features the molecular formula <strong>C6H15NaO4P</strong> and CAS No. 200747-99-7.</p>
<h3>Application</h3>
<ul>
<li>Pharmacokinetic studies quantifying diethyl phosphate metabolites in biological fluids.</li>
<li>Metabolic flux analysis using mass spectrometry to trace carbon pathways.</li>
<li>Quality control calibration for high-sensitivity pharmaceutical impurity testing.</li>
</ul>
<h3>Precautions</h3>
<p>Store at -20°C under inert atmosphere to prevent hydrolysis. Handle in fume hoods with PPE; avoid direct skin contact due to potential irritancy. Not approved for direct clinical administration.</p>