*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p><strong>Butyl Paraben-13C6</strong> is a stable isotopically labeled internal standard for mass spectrometry analysis, synthesized via esterification of para-hydroxybenzoic acid with deuterated butanol. Its molecular formula is C<sub>11</sub>H<sub>14</sub>O<sub>2</sub> (isotopic variant) and CAS number is 120475-89-2.</p>
<h3>Application</h3>
<ul>
<li>Pharmaceutical quality control for quantifying paraben preservatives in drug formulations.</li>
<li>Metabolism studies to trace absorption and excretion pathways in clinical trials.</li>
<li>Cosmetic safety assessments for detecting parabens in personal care products.</li>
</ul>
<h3>Precautions</h3>
<p>Store under inert atmosphere at -20°C to prevent degradation. Handle with appropriate PPE; avoid inhalation or skin contact during weighing procedures.</p>