*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p><strong>Levofloxacin R-Isomer</strong> (EP Impurity A) is the biologically inactive enantiomer of levofloxacin, synthesized via chiral separation or asymmetric synthesis. Its molecular formula is C<sub>18</sub>H<sub>20</sub>FN<sub>3</sub>O<sub>4</sub> with CAS No. 197753-54-9.</p>
<h3>Application</h3>
<ul>
<li>Pharmaceutical quality control as a reference standard for HPLC method validation.</li>
<li>Stability-indicating studies to monitor degradation pathways in drug formulations.</li>
<li>Toxicological research assessing the safety profile of fluoroquinolone impurities.</li>
</ul>
<h3>Precautions</h3>
<p>Store below -20°C in airtight containers under inert atmosphere. Avoid direct contact; use appropriate PPE due to potential mutagenicity risks associated with fluoroquinolone structures.</p>