*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>Entecavir intermediate (ET1) is a critical pharmaceutical building block for the synthesis of <strong>Entecavir</strong>, a potent antiviral agent. The core process involves chiral resolution and specific functional group transformations to ensure high optical purity.</p>
<ul>
<li><strong>Molecular Formula:</strong> C<sub>9</sub>H<sub>14</sub>N<sub>2</sub>O<sub>3</sub></li>
<li><strong>CAS Number:</strong> 156089-74-2</li>
</ul>
<h3>Application</h3>
<ul>
<li><strong>Pharmaceutical Manufacturing:</strong> Primary raw material for API production targeting chronic Hepatitis B virus (HBV) infections.</li>
<li><strong>R&D Laboratories:</strong> Used in stability testing and formulation development for new drug delivery systems.</li>
<li><strong>Quality Control:</strong> Serves as a reference standard for impurity profiling in finished Entecavir tablets.</li>
</ul>
<h3>Precautions</h3>
<p>Store strictly under <strong>inert atmosphere</strong> at temperatures below -20°C to prevent degradation. Personnel must utilize appropriate PPE including respirators and chemical-resistant gloves due to potential respiratory sensitization. Avoid direct contact with skin and eyes during handling operations.</p>