*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>(1R,3R,4R)-Entecavir is a potent guanosine analog used in antiviral therapy. Synthesized via chiral resolution or asymmetric catalysis, its molecular formula is <strong>C8H11N5O3</strong> with CAS <strong>120691-05-8</strong>.</p>
<h3>Application</h3>
<ul>
<li>Hepatitis B treatment: Inhibits HBV DNA polymerase.</li>
<li>Pharmaceutical manufacturing: API for chronic infection management.</li>
<li>Research: Viral replication mechanism studies.</li>
</ul>
<h3>Precautions</h3>
<p>Contraindicated in patients with renal impairment without dose adjustment. Store below 25°C in dry, light-resistant conditions. PPE required during handling to prevent inhalation or skin contact.</p>