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<h3>Overview</h3>
<p><strong>4-(P-Iodophenyl)butyric acid</strong> (CAS 1208-59-1, C<sub>10</sub>H<sub>11</sub>IO<sub>2</sub>) is a specialized iodinated aromatic carboxylic acid produced via electrophilic iodination of phenylbutyric acid derivatives. It serves as a critical intermediate in the synthesis of radiopharmaceuticals and high-performance liquid chromatography standards.</p>
<h3>Application</h3>
<ul>
<li>Radiochemistry: Precursor for iodine-123 labeled tracers used in SPECT imaging diagnostics.</li>
<li>Pharmaceutical R&D: Building block for developing novel neuroreceptor ligands.</li>
<li>Quality Control: Reference standard for purity analysis in organic synthesis workflows.</li>
</ul>
<h3>Precautions</h3>
<p>Requires storage in sealed amber containers under inert atmosphere at -20°C to prevent photodegradation. Handling mandates full PPE including nitrile gloves due to potential skin irritation and radiochemical hazards if isotopic variants are involved.</p>