*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>Entecavir intermediate (ETB) is a key pharmaceutical building block for the synthesis of <strong>Entecavir</strong>, a potent antiviral agent. The core process involves specific chiral resolution and nucleophilic substitution reactions to ensure high purity.</p>
<ul>
<li><strong>Molecular Formula:</strong> C<sub>10</sub>H<sub>17</sub>N<sub>5</sub>O<sub>2</sub></li>
<li><strong>CAS Number:</strong> 148910-66-3</li>
</ul>
<h3>Application</h3>
<ul>
<li><strong>Viral Hepatitis Treatment:</strong> Primary precursor for manufacturing Entecavir tablets targeting chronic hepatitis B virus (HBV) infection.</li>
<li><strong>API Manufacturing:</strong> Used by pharmaceutical manufacturers in bulk active pharmaceutical ingredient production lines.</li>
<li><strong>R&D Synthesis:</strong> Employed in research facilities for developing novel analogs with improved pharmacokinetic profiles.</li>
</ul>
<h3>Precautions</h3>
<ul>
<li><strong>Storage:</strong> Must be stored in a cool, dry, well-ventilated area away from direct sunlight and moisture.</li>
<li><strong>Safety:</strong> Requires personal protective equipment (PPE) during handling to avoid skin contact and inhalation of dust.</li>
<li><strong>Regulatory:</strong> Intended solely for industrial use; not for direct clinical administration without further processing.</li>
</ul>