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<h3>Overview</h3>
<p>Barbituric acid (CAS <strong>504-92-1</strong>, C<sub>4</sub>H<sub>4</sub>N<sub>2</sub>O<sub>3</sub>) is the parent heterocyclic compound for barbiturate synthesis via condensation of urea and diethyl malonate.</p>
<h3>Application</h3>
<ul>
<li>Sedative-hypnotic drug manufacturing</li>
<li>Polymerization initiators for resins</li>
<li>Flame retardant additives</li>
</ul>
<h3>Precautions</h3>
<p>Strictly regulated as a precursor; store in cool, dry areas away from oxidizers. Avoid inhalation or skin contact due to potential irritancy.</p>