*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p><strong>1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one</strong> is a key heterocyclic intermediate synthesized via condensation of phenylhydrazine and ethyl acetoacetate. It serves as a fundamental scaffold in pharmaceutical manufacturing. Molecular Formula: C<sub>10</sub>H<sub>10</sub>N<sub>2</sub>O; CAS No.: 1479-48-3.</p>
<h3>Application</h3>
<ul>
<li><strong>Pharmaceuticals:</strong> Precursor for anti-inflammatory and analgesic drug synthesis.</li>
<li><strong>Agricultural Chemicals:</strong> Building block for pyrazole-based herbicides and fungicides.</li>
<li><strong>Dyes & Pigments:</strong> Used in producing specialized azo dyes for textile industries.</li>
</ul>
<h3>Precautions</h3>
<p>Store in a cool, dry place under inert atmosphere to prevent oxidation. Avoid direct skin contact and inhalation of dust; use appropriate PPE including respirators and chemical-resistant gloves during handling.</p>