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<h3>Overview</h3>
<p>Doxycycline is a broad-spectrum <strong>tetracycline antibiotic</strong> synthesized via fermentation or semi-synthesis. Its molecular formula is C<sub>22</sub>H<sub>24</sub>N<sub>2</sub>O<sub>8</sub>, with CAS No. 564-25-0.</p>
<h3>Application</h3>
<ul>
<li><strong>Veterinary Medicine:</strong> Treatment of respiratory and skin infections in livestock.</li>
<li><strong>Human Healthcare:</strong> Management of acne, malaria prophylaxis, and Lyme disease.</li>
<li><strong>Agriculture:</strong> Growth promotion and infection control in aquaculture.</li>
</ul>
<h3>Precautions</h3>
<p>Contraindicated in pregnancy and children under eight due to tooth discoloration risks. Store in a cool, dry place below 25°C away from direct sunlight to maintain stability.</p>