*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p><strong>Roxithromycin-d7</strong> is a deuterated isotopologue of the macrolide antibiotic Roxithromycin, serving as a critical reference standard in pharmaceutical analysis. Synthesized via specialized isotopic exchange or deuteration processes, it ensures high precision in quantitative assays.</p>
<ul>
<li>Molecular Formula: <strong>C21H35NO7 (d7)</strong></li>
<li>CAS Number: <strong>149061-48-3</strong></li>
</ul>
<h3>Application</h3>
<ul>
<li><strong>Pharmaceutical QC:</strong> Used as an internal standard for HPLC and LC-MS quantification to validate drug purity.</li>
<li><strong>Metabolic Studies:</strong> Employed in pharmacokinetic research to trace metabolic pathways without altering biological activity.</li>
<li><strong>Regulatory Compliance:</strong> Essential for bioequivalence testing under FDA and EMA guidelines.</li>
</ul>
<h3>Precautions</h3>
<ul>
<li>Store strictly at -20°C in sealed, light-resistant containers to prevent isotopic degradation.</li>
<li>Handle with appropriate PPE to avoid inhalation or skin contact during weighing.</li>
<li>Not intended for direct clinical administration; use solely for analytical purposes.</li>
</ul>