*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>Dexamethasone-d5 is a <strong>deuterated internal standard</strong> used in mass spectrometry. It features a stable isotopic label replacing five hydrogen atoms. The molecular formula is C<sub>22</sub>H<sub>27</sub>D<sub>5</sub>FO<sub>4</sub> and CAS number is 100968-43-2.</p>
<h3>Application</h3>
<ul>
<li><strong>Pharmacokinetics:</strong> Quantification of dexamethasone levels in plasma via LC-MS/MS.</li>
<li><strong>Clinical Diagnostics:</strong> Validation of immunoassays for therapeutic drug monitoring.</li>
<li><strong>Metabolomics:</strong> Tracing metabolic pathways in biological fluid analysis.</li>
</ul>
<h3>Precautions</h3>
<p>Store at -20°C in sealed amber vials to prevent degradation. Handle with appropriate PPE as it is a research chemical, not for human injection. Ensure compatibility with chromatographic solvents during preparation.</p>