*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>N-Acetyl-L-Cysteine (NAC) is a synthetic derivative of the amino acid L-cysteine, primarily produced via <strong>enzymatic hydrolysis</strong> or chemical synthesis. It serves as a mucolytic agent and glutathione precursor. Molecular formula: C<sub>5</sub>H<sub>9</sub>NO<sub>3</sub>; CAS No.: 616-91-1.</p>
<h3>Application</h3>
<ul>
<li><strong>Pharmaceuticals:</strong> Acute acetaminophen overdose antidote and chronic respiratory therapy.</li>
<li><strong>Cosmetics:</strong> Antioxidant ingredient for skin brightening and anti-aging formulations.</li>
<li><strong>Food Industry:</strong> Dough conditioner and nutritional supplement additive.</li>
</ul>
<h3>Precautions</h3>
<p>Store in cool, dry conditions below 25°C to prevent oxidation. Clinical use requires monitoring for hypersensitivity reactions; not recommended for patients with active peptic ulcers without medical supervision.</p>