*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p><strong>Cetirizine Impurity A (EP/BP)</strong> is a critical reference standard for the quality control of cetirizine hydrochloride. Synthesized via specific organic pathways, it serves as an identification marker in pharmaceutical analysis. Its molecular formula is C20H24N2O6 and CAS number is 19872-53-0.</p>
<h3>Application</h3>
<ul>
<li><strong>Quality Control:</strong> Used in HPLC methods to detect and quantify impurities in drug substances.</li>
<li><strong>R&D:</strong> Supports stability studies and method validation for antihistamine formulations.</li>
<li><strong>Regulatory Compliance:</strong> Essential for meeting EP and BP monograph specifications during batch release.</li>
</ul>
<h3>Precautions</h3>
<p>Store in a cool, dry place away from direct sunlight. Handle with appropriate PPE to avoid inhalation or skin contact. Strictly for laboratory use only; not intended for clinical administration.</p>