*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>Pirfenidone is an oral <strong>anti-fibrotic</strong> agent synthesized via a multi-step organic process involving 5-methyl-1-phenylpyrazole. Its chemical structure is defined by the molecular formula <strong>C<sub>12</sub>H<sub>11</sub>N<sub>3</sub>O</strong> and CAS Registry Number <strong>5486-76-0</strong>.</p>
<h3>Application</h3>
<ul>
<li><strong>Pulmonary Medicine:</strong> Primary treatment for idiopathic pulmonary fibrosis (IPF) to slow disease progression.</li>
<li><strong>Respiratory Research:</strong> Investigational use in interstitial lung diseases associated with systemic sclerosis.</li>
</ul>
<h3>Precautions</h3>
<p>Strict adherence to dosing schedules is required due to potential photosensitivity reactions. Store in cool, dry conditions below 25°C away from direct sunlight. Contraindicated in patients with severe hepatic impairment.</p>