*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>Rac-Paroxetine-d4 Hydrochloride is a deuterated internal standard for quantitative analysis of paroxetine. It features identical physicochemical properties to the native drug but distinct mass spectrometry signals. The molecular formula is <strong>C19H20ClFNO</strong> with CAS <strong>127856-78-8</strong>.</p>
<h3>Application</h3>
<ul>
<li><strong>Pharmaceutical R&D:</strong> Used in bioanalytical method development for LC-MS/MS assays.</li>
<li><strong>Quality Control:</strong> Serves as a reference standard for purity verification and stability testing.</li>
<li><strong>Metabolic Studies:</strong> Facilitates precise tracking of paroxetine pharmacokinetics in clinical trials.</li>
</ul>
<h3>Precautions</h3>
<p>Store under inert atmosphere at -20°C to prevent degradation. Handle only in certified fume hoods using appropriate PPE. Not intended for human or veterinary therapeutic use; restricted to laboratory research applications exclusively.</p>