*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p><strong>Hexestrol-d4</strong> is a deuterium-labeled internal standard for Hexestrol, primarily synthesized via isotopic exchange or specialized coupling. It serves as a critical reference material in quantitative mass spectrometry to ensure accuracy in pharmacokinetic studies. <strong>Molecular Formula</strong>: C18H20D4O2; <strong>CAS No.</strong>: 579-64-6 (parent); specific labeled variant CAS requires batch verification.</p>
<h3>Application</h3>
<ul>
<li>Pharmaceutical R&D: Quantitative analysis of estrogen metabolites in biofluids using LC-MS/MS.</li>
<li>Clinical Diagnostics: Calibration standards for validating assay precision in hormone profiling.</li>
<li>Toxicology Research: Tracing metabolic pathways and excretion rates in preclinical models.</li>
</ul>
<h3>Precautions</h3>
<p>Strictly for research use only; not approved for human therapeutic administration. Store under inert atmosphere at -20°C to prevent isotopic dilution. Handle with appropriate PPE to avoid inhalation or dermal contact due to potential hormonal activity.</p>