*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>Azilsartan Impurity 4 is a critical reference standard for the quality control of Azilsartan medoxomil, an angiotensin II receptor blocker. It is synthesized via specific organic pathways to ensure high purity for analytical validation. The compound features the molecular formula <strong>C21H18N6O5S</strong> and carries CAS No. <strong>1097138-87-4</strong>.</p>
<h3>Application</h3>
<ul>
<li><strong>Pharmaceutical QC:</strong> Used as a calibration standard in HPLC assays to detect trace impurities in active pharmaceutical ingredients.</li>
<li><strong>R&D Validation:</strong> Employed during method development to establish specificity and stability-indicating capabilities.</li>
<li><strong>Regulatory Compliance:</strong> Essential for generating data required by FDA and EMA guidelines on drug substance characterization.</li>
</ul>
<h3>Precautions</h3>
<p>Store under inert atmosphere at 2-8°C away from light and moisture. Handle with appropriate PPE to avoid skin contact; not for direct human consumption or clinical use without formulation.</p>