*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p><strong>Trimethyl Phosphate-d9</strong> is a fully deuterated isotopologue of trimethyl phosphate, primarily synthesized via the esterification of phosphoric acid with deuterated methanol. It serves as a critical internal standard in mass spectrometry and NMR spectroscopy for quantitative analysis.</p>
<ul>
<li><strong>Molecular Formula:</strong> (CD<sub>3</sub>)<sub>3</sub>PO<sub>4</sub></li>
<li><strong>CAS Number:</strong> 1786-26-5</li>
</ul>
<h3>Application</h3>
<ul>
<li><strong>Analytical Chemistry:</strong> Used as an internal standard to correct matrix effects during LC-MS/MS quantification of organophosphorus compounds.</li>
<li><strong>Metabolic Research:</strong> Employed in stable isotope labeling studies to trace metabolic pathways without altering chemical reactivity significantly.</li>
<li><strong>Spectroscopy:</strong> Provides a reference signal in <sup>31</sup>P-NMR to calibrate chemical shifts in complex solvent systems.</li>
</ul>
<h3>Precautions</h3>
<ul>
<li><strong>Storage:</strong> Must be stored under inert atmosphere at temperatures below -20°C to prevent hydrolysis and moisture absorption.</li>
<li><strong>Safety:</strong> Handle in a fume hood; avoid skin contact as it may cause irritation and is toxic if ingested.</li>
<li><strong>Regulatory:</strong> Not approved for direct clinical use; restricted to laboratory research applications only.</li>
</ul>